diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..ebeb9de 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -35,7 +35,7 @@ public String greet(String name) {
         Complete this method so that it increases the number given by 1 and returns the result
      */
     public int increment(int number) {
-        return 0;
+        return number + 1;
     }
 
     /*
@@ -48,8 +48,8 @@ public int increment(int number) {
         Nathan | Hi, Nathan :)
         Edward | Hi, Edward :)
      */
-    public String happilyGreet() {
-        return "Not implemented yet";
+    public String happilyGreet(String name) {
+        return "Hi, " + name + " :)";
     }
 
     /*
@@ -65,9 +65,16 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
+    @Override
+    public int[] constructNumberArray(int lower, int upper) {
+        int arraySize = upper - lower + 1;
+        int[] resultArray = new int[arraySize];
 
-
-
+        for (int i = 0; i < arraySize; i++) {
+            resultArray[i] = lower + i;
+        }
+        return resultArray;
+    }
     /*
         4. Shout at a dev
         Create a method named shout that accepts a string and a whole number.
@@ -80,7 +87,13 @@ The method must return the same string in upper case with exclamation marks (!)
         disaster, 5 | DISASTER!!!!!
         error, 10   | ERROR!!!!!!!!!!
      */
-
+    public String shout(String w, int num) {
+        String s =  w.toUpperCase() ;
+        for (int i = 0; i < num; i++) {
+            s += "!";
+        }
+        return s;
+    }
 
 
 
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..ad8fa05 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -8,7 +8,9 @@ public class Extension extends ExtensionBase {
     /*
         5. Create a method named bakingTime that returns the number 50
      */
-
+    public int bakingTime() {
+        return 50;
+    }
 
 
 
@@ -19,7 +21,9 @@ public class Extension extends ExtensionBase {
         It must return how many minutes are left to bake based on the input
         and the result of calling the bakingTime method
      */
-
+    public int remainingBakeTime(int minutes) {
+        return bakingTime() - minutes;
+    }
 
 
 
@@ -31,9 +35,10 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
-
-
-
+    @Override
+    public int calculatePrepTime(int layers) {
+        return layers * 3;
+    }
     /*
         8. Create a method named totalTimeSpent that accepts two inputs in this order:
         - the number of layers the cake has
@@ -44,7 +49,8 @@ public class Extension extends ExtensionBase {
         in the oven. Use your calculatePrepTime method in the calculation
      */
 
-
-
-
+    @Override
+    public int totalTimeSpent(int layers, int done) {
+        return calculatePrepTime(layers) + done;
+    }
 }