diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..6459391 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 + " :)";
     }
 
     /*
@@ -65,7 +65,14 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
-
+    public int[] constructNumberArray(int lower, int upper){
+        int count = upper-lower+1;
+        int[] retArray = new int[count];
+        for (int i = 0; i < count; i++){
+            retArray[i] = lower+i;
+        }
+        return retArray;
+    }
 
 
     /*
@@ -80,7 +87,14 @@ The method must return the same string in upper case with exclamation marks (!)
         disaster, 5 | DISASTER!!!!!
         error, 10   | ERROR!!!!!!!!!!
      */
-
+    public String shout(String str, int num){
+        StringBuilder sb = new StringBuilder();
+        sb.append(str.toUpperCase());
+        for(int i = 0; i < num; i++){
+            sb.append("!");
+        }
+        return sb.toString();
+    }
 
 
 
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..9b41e7e 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -9,7 +9,9 @@ public class Extension extends ExtensionBase {
         5. Create a method named bakingTime that returns the number 50
      */
 
-
+    public int bakingTime(){
+        return 50;
+    }
 
 
     /*
@@ -20,6 +22,10 @@ public class Extension extends ExtensionBase {
         and the result of calling the bakingTime method
      */
 
+    public int remainingBakeTime(int remTime){
+        return bakingTime()-remTime;
+    }
+
 
 
 
@@ -31,7 +37,9 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
-
+    public int calculatePrepTime(int layers){
+        return 3*layers;
+    }
 
 
     /*
@@ -43,7 +51,9 @@ 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 timeSpent){
+        return calculatePrepTime(layers)+timeSpent;
+    }