diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..01d72cc 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -35,7 +35,8 @@ 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;
+        number++;
+        return number;
     }
 
     /*
@@ -48,8 +49,8 @@ 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 + " :)";
     }
 
     /*
@@ -64,6 +65,17 @@ public String happilyGreet() {
         10, 13 | [10,11,12,13]
         -1, 1  | [-1,0,1]
      */
+    public int[] constructNumberArray(int lower, int upper) {
+        int size = upper - lower + 1;
+        int[] nums = new int[size];
+
+        int index = 0;
+        for (int n = lower; n <= upper; n++) {
+            nums[index++] = n;
+        }
+
+        return nums;
+    }
 
 
 
@@ -80,6 +92,10 @@ The method must return the same string in upper case with exclamation marks (!)
         disaster, 5 | DISASTER!!!!!
         error, 10   | ERROR!!!!!!!!!!
      */
+    public String shout(String s, int n) {
+        String result = s.toUpperCase();
+        return result + new String("!").repeat(n);
+    }
 
 
 
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..639c70e 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -9,6 +9,9 @@ public class Extension extends ExtensionBase {
         5. Create a method named bakingTime that returns the number 50
      */
 
+     public int bakingTime() {
+        return 50;
+     }
 
 
 
@@ -19,6 +22,9 @@ 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;
+    }
 
 
 
@@ -31,6 +37,9 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
+     public int calculatePrepTime(int layers) {
+        return 3 * layers;
+     }
 
 
 
@@ -43,8 +52,8 @@ public class Extension extends ExtensionBase {
         which is the sum of the preparation time and the number of minutes it's been
         in the oven. Use your calculatePrepTime method in the calculation
      */
-
-
-
+    public int totalTimeSpent(int layers, int minutesPassed) {
+        return calculatePrepTime(layers) + minutesPassed;
+    }
 
 }