diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..cf2a4c4 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 +48,9 @@ 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 +66,16 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
+    public int[] constructNumberArray(int lower, int upper) {
+        int diff = upper-lower + 1;
+        int[] answer = new int[diff];
+
+        for (int i = 0; i<diff; i++){
 
+            answer[i] = lower + i;
+        }
+        return answer;
+    }
 
 
     /*
@@ -81,7 +91,14 @@ The method must return the same string in upper case with exclamation marks (!)
         error, 10   | ERROR!!!!!!!!!!
      */
 
+    public String shout(String word, int exclamations) {
 
+        String answer = word.toUpperCase();
+        for (int i = 0; i < exclamations; i++) {
 
+            answer += "!";
 
+        }
+        return answer;
+    }
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..c8ecf4e 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -10,6 +10,9 @@ public class Extension extends ExtensionBase {
      */
 
 
+    public int bakingTime(){
+        return 50;
+    }
 
 
     /*
@@ -20,7 +23,11 @@ public class Extension extends ExtensionBase {
         and the result of calling the bakingTime method
      */
 
+    public int remainingBakeTime(int done) {
 
+        int number = bakingTime() - done;
+        return number;
+    }
 
 
     /*
@@ -32,6 +39,10 @@ public class Extension extends ExtensionBase {
      */
 
 
+    public int calculatePrepTime(int layers){
+
+        return layers * 3;
+    }
 
 
     /*
@@ -45,6 +56,10 @@ public class Extension extends ExtensionBase {
      */
 
 
+    public int totalTimeSpent(int layers, int minutes){
+
+        return calculatePrepTime(layers) + minutes;
+    }
 
 
 }