diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..3f42da0
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,17 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}/week-1/2-mandatory/1-syntax-errors.js"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/week-1/2-mandatory/1-syntax-errors.js b/week-1/2-mandatory/1-syntax-errors.js
index fb756b6..0b10167 100644
--- a/week-1/2-mandatory/1-syntax-errors.js
+++ b/week-1/2-mandatory/1-syntax-errors.js
@@ -1,19 +1,24 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
+function addNumbers(a, b ,c) {
     return a + b + c;
 }
 
-function introduceMe(name, age)
-return "Hello, my name is " + name "and I am " age + "years old";
+function introduceMe(name, age){
+    
+
+return `Hello, my name is ${name} and I am ${age} years old`
+}
 
-function getTotal(a, b) {
-    total = a ++ b;
 
+
+function getTotal(a, b) {
+    total = a + b;
     // Use string interpolation here
-    return "The total is %{total}"
+    return `The total is ${total}` 
 }
 
+
 /* ======= TESTS - DO NOT MODIFY =====
 There are some Tests in this file that will help you work out if your code is working.
 
@@ -22,6 +27,11 @@ To run these tests type `node 1-syntax-errors.js` into your terminal
 
 const util = require('util');
 
+
+/* ======= TESTS - DO NOT MODIFY ===== */
+
+// To run these tests type `node 1-syntax-errors.js` into your terminal
+
 function test(test_name, actual, expected) {
     let status;
     if (actual === expected) {
diff --git a/week-1/2-mandatory/2-logic-error.js b/week-1/2-mandatory/2-logic-error.js
index c844460..462cc32 100644
--- a/week-1/2-mandatory/2-logic-error.js
+++ b/week-1/2-mandatory/2-logic-error.js
@@ -1,23 +1,35 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
-function trimWord(word) {
-  return wordtrim();
+function trimWord(Word) {
+  
+  return Word.trim();
 }
 
+console.log(trimWord(" CodeYourFuture "));
+
+
 function getWordLength(word) {
-  return "word".length()
+
+  let wordLength = "A wild sentence appeared!";
+  return wordLength.length;
 }
+ 
+
+console.log(getWordLength());
+
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+  
+  return a * b * c;
+
 }
+console.log(multiply(2,3,6));
+
 
-/* ======= TESTS - DO NOT MODIFY =====
+/* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
 
-To run these tests type `node 2-logic-error` into your terminal
-*/
+To run these tests type `node 2-logic-error` into your terminal*/
 
 const util = require('util');
 
diff --git a/week-1/2-mandatory/3-function-output.js b/week-1/2-mandatory/3-function-output.js
index c8e8577..495a4dc 100644
--- a/week-1/2-mandatory/3-function-output.js
+++ b/week-1/2-mandatory/3-function-output.js
@@ -1,20 +1,30 @@
-// Add comments to explain what this function does. You're meant to use Google!
+// This function round the decimal number to the nearset whole number 
 function getNumber() {
   return Math.random() * 10;
 }
 
-// Add comments to explain what this function does. You're meant to use Google!
+// The concat() method is used to join two or more strings.
 function s(w1, w2) {
   return w1.concat(w2);
 }
 
-function concatenate(firstWord, secondWord, thirdWord) {
-  // Write the body of this function to concatenate three words together.
-  // Look at the test case below to understand what this function is expected to return.
+function concatenate(firstword, secondWord, thirdWord) {
+
+   const join = firstword.concat(" "+secondWord +" " + thirdWord);
+
+
+   return join;
 }
 
-/* ======= TESTS - DO NOT MODIFY =====
-There are some Tests in this file that will help you work out if your code is working.
+console.log(concatenate("code", "your", "future"));
+
+
+
+
+
+/* ======= TESTS - DO NOT MODIFY ===== */
+
+/*There are some Tests in this file that will help you work out if your code is working.
 To run these tests type `node 3-function-output` into your terminal
 */
 
diff --git a/week-1/2-mandatory/4-tax.js b/week-1/2-mandatory/4-tax.js
index 79db540..ecc42b8 100644
--- a/week-1/2-mandatory/4-tax.js
+++ b/week-1/2-mandatory/4-tax.js
@@ -5,7 +5,14 @@
   Sales tax is 20% of the price of the product
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(productPrice) {
+   saleTax= 20/100;
+  return productPrice*saleTax+productPrice ; 
+    
+}
+
+
+console.log(calculateSalesTax(15));
 
 /*
   CURRENCY FORMATTING
@@ -14,12 +21,27 @@ function calculateSalesTax() {}
   They must also start with the currency symbol
   Write a function that adds tax to a number, and then transforms the total into the format £0.00
 
-  Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
+  Remember that the prices must include the sales tax (hint: you already
+     wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
 
-/* ======= TESTS - DO NOT MODIFY =====
+function addTaxAndFormatCurrency(productPrice) {
+
+    saleTax= 20/100;
+    currency=  "£" ;
+  
+  
+    salePrice= productPrice* saleTax+ productPrice;
+    return currency + salePrice.toFixed(2) ;
+  
+  }
+  
+  
+
+
+
+/* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
 To run these tests type `node 4-tax.js` into your terminal
 */
diff --git a/week-1/3-extra/1-currency-conversion.js b/week-1/3-extra/1-currency-conversion.js
index 5f06097..31983dc 100644
--- a/week-1/3-extra/1-currency-conversion.js
+++ b/week-1/3-extra/1-currency-conversion.js
@@ -5,7 +5,12 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(pounds) {
+
+let exchange = pounds * 1.4 ;
+return exchange;
+
+}
 
 /*
   CURRENCY FORMATTING
@@ -15,7 +20,13 @@ function convertToUSD() {}
   They have also decided that they should add a 1% fee to all foreign transactions, which means you only convert 99% of the £ to BRL.
 */
 
-function convertToBRL() {}
+function convertToBRL(pound) {
+
+  let currency = (pound* 5.7) * 1.01;
+
+  return currency ;
+
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
diff --git a/week-1/3-extra/2-piping.js b/week-1/3-extra/2-piping.js
index 067dd0f..b43138f 100644
--- a/week-1/3-extra/2-piping.js
+++ b/week-1/3-extra/2-piping.js
@@ -16,26 +16,34 @@
   the final result to the variable goodCode
 */
 
-function add() {
+function add(a,b) {
+  return a + b ;
 
 }
 
-function multiply() {
+
+function multiply(a,b) {
+  return a*b ;
 
 }
 
-function format() {
+function format(a) {
+
+  return `£${a}`
 
 }
 
 const startingValue = 2
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode = 
+let badCode = format(multiply(add(startingValue, 10 ), 2));
 
 /* BETTER PRACTICE */
+let adds= add(startingValue,10);
+let multiplies = multiply(adds , 2);
+
 
-let goodCode = 
+let goodCode = format(multiplies);
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
diff --git a/week-2/2-mandatory/1-fix-functions.js b/week-2/2-mandatory/1-fix-functions.js
index d5dfada..be4c045 100644
--- a/week-2/2-mandatory/1-fix-functions.js
+++ b/week-2/2-mandatory/1-fix-functions.js
@@ -2,7 +2,7 @@
 // Look at the tests and see how you can fix them.
 
 function mood() {
-  let isHappy = true;
+  let isHappy = false;
 
   if (isHappy) {
     return "I am happy";
@@ -11,8 +11,15 @@ function mood() {
   }
 }
 
+
 function greaterThan10(num) {
   let isBigEnough;
+}
+console.log(mood());
+
+function greaterThan10() {
+  let num = 10;
+  let isBigEnough= num;
 
   if (isBigEnough) {
     return "num is greater than 10";
@@ -21,24 +28,43 @@ function greaterThan10(num) {
   }
 }
 
+
 function sortArray(letters) {
-  let sortedLetters = letters;
+  let sortedLetters = letters;}
+
+console.log(greaterThan10());
+
+
+function sortArray() {
+  let letters = ["a", "n", "c", "e", "z", "f"];
+  let sortedLetters= ["a", "c", "e", "f", "n", "z"];
 
   return sortedLetters;
 }
 
+
 function first5(numbers) {
   let sliced;
+}
+
+console.log(sortArray());
+
+
+function first5() {
+  let numbers = [1, 2, 3, 4, 5, 6, 7, 8];
+  let sliced= [1, 2, 3, 4, 5];
 
   return sliced;
 }
+console.log(first5());
 
-function get3rdIndex(arr) {
-  let index = 3;
-  let element;
 
-  return element;
+function get3rdIndex(array) {
+  
+  return array[3];
 }
+console.log(get3rdIndex(["fruit", "banana", "apple", "strawberry", "raspberry"]));
+console.log(get3rdIndex([11, 37, 62, 18, 19, 3, 30]));
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/week-2/2-mandatory/2-function-creation.js b/week-2/2-mandatory/2-function-creation.js
index 8494bfa..e1fc223 100644
--- a/week-2/2-mandatory/2-function-creation.js
+++ b/week-2/2-mandatory/2-function-creation.js
@@ -5,7 +5,17 @@ Write a function that:
 - removes any forward slashes (/) in the strings
 - makes the string all lowercase
 */
-function tidyUpString(strArr) {}
+
+function tidyUpString(strArr) {
+let tidU = strArr.to;
+  
+  return;
+
+}
+
+console.log(tidyUpString(["/Daniel ", "irina ", " Gordon", "ashleigh "]));
+
+
 
 /*
 Complete the function to check if the variable `num` satisfies the following requirements:
@@ -15,7 +25,18 @@ Complete the function to check if the variable `num` satisfies the following req
 Tip: use logical operators
 */
 
-function validate(num) {}
+function validate(num) {
+
+if (num <=100 && typeof num === "number" && num % 2 == 0)
+  {
+ return true;
+}
+else {
+  return false;
+}
+}
+console.log(validate(20));
+
 
 /* 
 Write a function that returns a copy of the given array arr, but with the element at the given index, index removed.
@@ -23,9 +44,14 @@ The function must NOT change the original array, arr.
 */
 
 function remove(arr, index) {
-  return; // complete this statement
+  if (arr.length > index) {
+    return arr;
+    }
+   
+// complete this statement
 }
 
+
 /*
 Write a function that:
 - takes an array of numbers as input
@@ -35,11 +61,14 @@ Write a function that:
 */
 
 function formatPercentage(arr) {
+
+
   
 }
+  
 
-/* ======= TESTS - DO NOT MODIFY ===== */
 
+/* ======= TESTS - DO NOT MODIFY ===== */
 const util = require('util');
 
 function test(test_name, actual, expected) {
@@ -61,6 +90,7 @@ function test(test_name, actual, expected) {
   console.log(`${test_name}: ${status}`);
 }
 
+
 function arraysEqual(a, b) {
   if (a === b) return true;
   if (a == null || b == null) return false;
@@ -117,5 +147,7 @@ test(
     "18.1%",
     "100%",
     "0.37%"
+
   ]
 );
+
diff --git a/week-2/2-mandatory/3-playing-computer.js b/week-2/2-mandatory/3-playing-computer.js
index 0fa7c04..f5179d9 100644
--- a/week-2/2-mandatory/3-playing-computer.js
+++ b/week-2/2-mandatory/3-playing-computer.js
@@ -28,7 +28,7 @@ const f2 = function(a, b) {
 
 console.log(x);
 console.log(a);
-console.log(b);
+
 
 for (let i = 0; i < 5; ++i) {
   a = a + 1;
@@ -40,3 +40,14 @@ for (let i = 0; i < 5; ++i) {
     console.log(e);
   }
 }
+
+
+
+/*  My asnwers 
+1. The error was console.log(b);
+2. The console print  out 2 6 4 9 6 13 8 ;
+3. f1 called three times.
+4. f2 called four times.
+5. "a" is equal to 6 ;
+6. "a" is equal to 7 ;
+*/
\ No newline at end of file
diff --git a/week-3/2-mandatory/1-oxygen-levels.js b/week-3/2-mandatory/1-oxygen-levels.js
index f9d745f..4022db8 100644
--- a/week-3/2-mandatory/1-oxygen-levels.js
+++ b/week-3/2-mandatory/1-oxygen-levels.js
@@ -9,7 +9,13 @@ To be safe to land on, a planet needs to have an Oxygen level between 19.5% and
 Write a function that finds the first safe oxygen level in the array - Oxygen between 19.5% and 23.5%
 */
 
-function safeLevels() {
+function safeLevels(oxygenL1) {
+    return oxygenL1.find(planet);
+}
+function planet(safeToliveOn){
+    if(parseFloat(safeToliveOn) >19.5 && parseFloat(safeToliveOn) < 23.5) {
+        return safeToliveOn + "%" ;
+    }
 
 }
 
diff --git a/week-3/2-mandatory/2-bush-berries.js b/week-3/2-mandatory/2-bush-berries.js
index aca45ad..bf416b8 100644
--- a/week-3/2-mandatory/2-bush-berries.js
+++ b/week-3/2-mandatory/2-bush-berries.js
@@ -10,8 +10,20 @@
   Use the tests to confirm which message to return
 */
 
-function bushChecker() {
+function bushChecker(bushBerryColours) {
+  let checkResult = bushBerryColours.every(checkColours);
+   if (checkResult === true){
+     return   "Bush is safe to eat from";
+   }
+   else {
+     return   "Toxic! Leave bush alone!";
+   }
+}
 
+function checkColours(berryColour){
+  if (berryColour === "pink"){
+    return true ;
+  }
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/week-3/2-mandatory/3-space-colonies.js b/week-3/2-mandatory/3-space-colonies.js
index 239eddd..cb6aec3 100644
--- a/week-3/2-mandatory/3-space-colonies.js
+++ b/week-3/2-mandatory/3-space-colonies.js
@@ -8,9 +8,15 @@
   NOTE: don't include any element that is not a "family".
 */
 
-function colonisers() {
-
+function colonisers(voyagers) {
+  var voyagers = voyagers.filter(chosenFamilies);
+ 
+  return voyagers;
 }
+ function chosenFamilies(familyLastName){
+   return familyLastName.includes("family") && familyLastName.charAt(0) === "A";
+ }
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/week-3/2-mandatory/4-eligible-students.js b/week-3/2-mandatory/4-eligible-students.js
index d8fe052..9530807 100644
--- a/week-3/2-mandatory/4-eligible-students.js
+++ b/week-3/2-mandatory/4-eligible-students.js
@@ -7,8 +7,14 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function eligibleStudents() {
-
+function eligibleStudents(studentsWorks) {
+  let studentsWhoSitForTest= [];
+  for(i =0; i < studentsWorks.length; i++){
+    if (studentsWorks[i][1] >= 8){
+      studentsWhoSitForTest.push(studentsWorks[i][0])
+    }
+  }
+ return studentsWhoSitForTest ;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/week-3/2-mandatory/5-journey-planner.js b/week-3/2-mandatory/5-journey-planner.js
index 816637d..c0dffbd 100644
--- a/week-3/2-mandatory/5-journey-planner.js
+++ b/week-3/2-mandatory/5-journey-planner.js
@@ -7,7 +7,15 @@
   NOTE: only the names should be returned, not the means of transport.
 */
 
-function journeyPlanner() {
+function journeyPlanner(londonLocations, typesOfTransports) {
+
+  let availbleLocation=[];
+
+  for(i=0;i< londonLocations.length; i++ ){
+    if(londonLocations[i].includes(typesOfTransports)){
+      availbleLocation.push(londonLocations[i][0]);
+    }
+  } return availbleLocation;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/week-3/2-mandatory/6-lane-names.js b/week-3/2-mandatory/6-lane-names.js
index ef4e1c5..3d658c4 100644
--- a/week-3/2-mandatory/6-lane-names.js
+++ b/week-3/2-mandatory/6-lane-names.js
@@ -4,10 +4,15 @@
   Write a function that will return all street names which contain 'Lane' in their name.
 */
 
-function getLanes() {
-
+function getLanes(streetNames) {
+  let streetEndLane= streetNames.filter(lane);
+  return streetEndLane;
 }
 
+function lane(input){
+return input.includes("Lane");
+
+}
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const streetNames = [
diff --git a/week-3/2-mandatory/7-password-validator.js b/week-3/2-mandatory/7-password-validator.js
index 8f9e597..800b532 100644
--- a/week-3/2-mandatory/7-password-validator.js
+++ b/week-3/2-mandatory/7-password-validator.js
@@ -22,8 +22,58 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {
+function fiveOrMoreCharacters(passwordString) {
+  if (passwordString.length >= 5) {
+    return true;
+  } else {
+    return false;
+  };
+}
+function containsUpperCase(password) {
+  let regex = /[A-Z]/;
+return regex.test(password);
+
+}
+
+function containsLowerCase(password) {
+let regex =/[a-z]/;
+return regex.test(password);
+}
+
+function containsNumbers(password) {
+  let regex =/[0-9]/;
+  return regex.test(password)
+}
+function containsSymbols(password) {
 
+let regex =/[!#$%.*&]/;
+return regex.test(password); 
+    
+
+}
+
+function hasDuplicates(array) {
+  var valuesSoFar = [];
+  for (var i = 0; i < array.length; ++i) {
+      var value = array[i];
+      if (valuesSoFar.indexOf(value) !== -1) {
+          return true;
+      }
+      valuesSoFar.push(value);
+  }
+  return false;
+}
+
+function validatePasswords(passwords) {
+  let returnArray = [];
+  for(let i =0; i < passwords.length; i++) {
+    if (fiveOrMoreCharacters(passwords[i]) === true && containsUpperCase(passwords[i]) === true && containsLowerCase(passwords[i]) === true && containsNumbers(passwords[i])
+     === true && containsSymbols(passwords[i]) === true && hasDuplicates(passwords[i]) === true)  {
+     returnArray.push(true);
+    } else {
+      returnArray.push(false);
+    } 
+  } return returnArray;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/week-3/3-extra/3-sorting-algorithm.js b/week-3/3-extra/3-sorting-algorithm.js
index 3603942..dbe7eb9 100644
--- a/week-3/3-extra/3-sorting-algorithm.js
+++ b/week-3/3-extra/3-sorting-algorithm.js
@@ -14,7 +14,15 @@ You don't have to worry about making this algorithm work fast! The idea is to ge
 "think" like a computer and practice your knowledge of basic JavaScript.
 */
 
-function sortAges(arr) {}
+function sortAges(arr) {
+  if (arr !== Number){
+    return Number ;
+  } 
+  if()
+
+  
+}
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */