diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..649d65a 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 +65,16 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
+    public int[] constructNumberArray(int lower, int upper) {
+        int[] res = new int[upper-lower+1];
+        int j = 0;
+        for (int i = lower; i <= upper; i++){
+            res[j] = i;
+            j++;
+        }
+        return res;
+    }
+
 
 
 
@@ -81,7 +91,8 @@ The method must return the same string in upper case with exclamation marks (!)
         error, 10   | ERROR!!!!!!!!!!
      */
 
-
-
-
+    public String shout(String word, int num){
+        String str = "!".repeat(Math.max(0, num));
+        return word.toUpperCase() + str;
+    }
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..0608670 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -9,8 +9,9 @@ public class Extension extends ExtensionBase {
         5. Create a method named bakingTime that returns the number 50
      */
 
-
-
+    public int bakingTime(){
+        return 50;
+    }
 
     /*
         6. Create a method named remainingBakeTime that accepts one input:
@@ -20,7 +21,9 @@ public class Extension extends ExtensionBase {
         and the result of calling the bakingTime method
      */
 
-
+    public int remainingBakeTime(int mins){
+        return bakingTime()-mins;
+    }
 
 
     /*
@@ -31,7 +34,9 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
-
+    public int calculatePrepTime(int layers){
+        return layers*3;
+    }
 
 
     /*
@@ -44,7 +49,8 @@ public class Extension extends ExtensionBase {
         in the oven. Use your calculatePrepTime method in the calculation
      */
 
-
-
+    public int totalTimeSpent(int layers, int mins){
+        return calculatePrepTime(layers) + mins;
+    }
 
 }