diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..491052e 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;
     }
 
     /*
@@ -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 + " :)";
     }
 
     /*
@@ -66,7 +66,13 @@ public String happilyGreet() {
      */
 
 
-
+    public int[] constructNumberArray(int lower, int upper) {
+        int[] numbers = new int[upper - lower + 1];
+        for (int i = 0; i < upper - lower + 1; i++) {
+            numbers[i] = lower + i;
+        }
+        return numbers;
+    }
 
     /*
         4. Shout at a dev
@@ -81,7 +87,12 @@ The method must return the same string in upper case with exclamation marks (!)
         error, 10   | ERROR!!!!!!!!!!
      */
 
-
-
+    public String shout(String message, int x) {
+        StringBuilder exclamations = new StringBuilder();
+        for (int i = 0; i < x; i++) {
+            exclamations.append("!");
+        }
+        return message.toUpperCase().concat(exclamations.toString());
+    }
 
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..0a8d267 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;
+    }
 
 
 
@@ -20,7 +22,9 @@ public class Extension extends ExtensionBase {
         and the result of calling the bakingTime method
      */
 
-
+    public int remainingBakeTime(int minutes) {
+        return bakingTime() - minutes;
+    }
 
 
     /*
@@ -31,7 +35,9 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
-
+    public int calculatePrepTime(int numOfLayers) {
+        return numOfLayers * 3;
+    }
 
 
     /*
@@ -44,7 +50,9 @@ public class Extension extends ExtensionBase {
         in the oven. Use your calculatePrepTime method in the calculation
      */
 
-
+    public int totalTimeSpent(int numOfLayers, int minutesInOven) {
+        return calculatePrepTime(numOfLayers) + minutesInOven;
+    }
 
 
 }