diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..2720efa 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 + " :)";
     }
 
     /*
@@ -65,6 +65,13 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
+    public int [] constructNumberArray(int lower, int upper) {
+        int [] array = new int [upper - lower + 1];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = lower + i;
+        }
+        return array;
+    }
 
 
 
@@ -81,7 +88,15 @@ The method must return the same string in upper case with exclamation marks (!)
         error, 10   | ERROR!!!!!!!!!!
      */
 
+    public String shout(String word, int number) {
+        StringBuilder exclamation = new StringBuilder();
+        for(int i = 0; i < number; i++) {
+            exclamation.append("!");
+        }
+        word += exclamation;
 
+        return word.toUpperCase();
+    }
 
 
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..83835ae 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -10,7 +10,9 @@ public class Extension extends ExtensionBase {
      */
 
 
-
+    public int bakingTime() {
+        return 50;
+    }
 
     /*
         6. Create a method named remainingBakeTime that accepts one input:
@@ -21,7 +23,9 @@ public class Extension extends ExtensionBase {
      */
 
 
-
+    public int remainingBakeTime(int inOven) {
+        return bakingTime() - inOven;
+    }
 
     /*
         7. Create a method named calculatePrepTime that accepts one input:
@@ -31,6 +35,9 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
+    public int calculatePrepTime (int layers) {
+        return layers * 3;
+    }
 
 
 
@@ -44,7 +51,10 @@ public class Extension extends ExtensionBase {
         in the oven. Use your calculatePrepTime method in the calculation
      */
 
-
+    public int totalTimeSpent(int layers, int numberOfMinInOven) {
+      int sum =  calculatePrepTime(layers) + bakingTime() - remainingBakeTime(numberOfMinInOven);
+      return sum;
+    }
 
 
 }