diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 0dcfd00f40..f91078f30a 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -38,29 +38,98 @@
     
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    function is1500(inventor) {
+      let yearOfBirth = inventor.year;
+      if (yearOfBirth > 1499 && yearOfBirth < 1600) {
+        console.table(inventor);
+      }
+    }
 
+      const filtered = inventors.filter(is1500);
+    
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
 
+    const firstName = inventors.map(function firstAndLast(inventor){
+      console.log(`${inventor.first} ${inventor.last}`);
+    })
+
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
 
+    const oldToYoung = inventors.sort(function(inventorOne,inventorTwo){
+      return inventorOne.year - inventorTwo.year;
+    });
+
+    console.table(oldToYoung);
+
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live all together?
 
+    const ageOfInventors = []
+
+    for(let i = 0; i < inventors.length; i++) {
+      let age = inventors[i].passed - inventors[i].year;
+      ageOfInventors.push(age);
+    }
+
+    const sum = ageOfInventors.reduce(sumAll);
+
+    function sumAll(total, value) {
+      return total+value;
+    }
+
+    console.log(`The number of the years that all the inventors live together is: ${sum}`);
+
     // 5. Sort the inventors by years lived
 
+    function sortByYearsLived(inventorOne, inventorTwo){
+      let firstPerson = inventorOne.passed - inventorOne.year;
+      let secondPerson = inventorTwo.passed - inventorTwo.year;
+
+      if(firstPerson > secondPerson) {
+        return -1;
+      } else {
+        return 1; // bubble up
+      }
+    }
+
+    const age = inventors.sort(sortByYearsLived);
+
+    console.table(age);
+
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
+    // const div = document.querySelector('.mw-category');
+    // const links = Array.from(div.querySelectorAll('a'));
+    // let de = links.map(function(link){
+    //   return link.textContent;
+    // });
+
+    // de.filter(hasDe => hasDe.includes('de'));
 
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
 
+    const sortedNames = people.sort();
+    console.log(sortedNames);
+
     // 8. Reduce Exercise
     // Sum up the instances of each of these
     const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
 
+    let instances = data.reduce(function(allCars, car) {
+      if(car in allCars) {
+        allCars[car]++;
+      } else {
+        allCars[car] = 1;
+      }
+      return allCars;
+    }, {})
+
+    console.log(instances);
+
   </script>
 </body>
 </html>
diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 4ca34c7536..0c462e271e 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -27,16 +27,50 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
+    const currentYear = (new Date()).getFullYear();
+    const nineteen = people.some(function(person) {
+      let age = currentYear - person.year;
+      if(age >= 19) {
+        return true;
+      }
+    })
+
+    console.log(nineteen);
+
     // Array.prototype.every() // is everyone 19 or older?
+    const allNineteen = people.every(function(person) {
+      let age = currentYear - person.year;
+      if(age >= 19) {
+        return true;
+      }
+    })
+
+    console.log(allNineteen);
 
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
+    const targetId = comments.find(function(comment) {
+      if(comment.id === 823423) {
+        return comment;
+      }
+    })
+
+    console.log(targetId);
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
 
+    const targetComment = comments.findIndex(function(comment) {
+      if(comment.id === 823423) {
+        return true;
+      }
+    })
+    console.log(targetComment);
+
+    comments.splice(targetComment, 1);
+
   </script>
 </body>
 </html>