diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7ac3cfb..e2c4041 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -2,6 +2,9 @@
 
 import com.booleanuk.helpers.ExerciseBase;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
 public class Exercise extends ExerciseBase {
     /*
         A method is a function, a single piece of logic that can run. In Java, a class is a convenient
@@ -35,7 +38,7 @@ 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 +51,8 @@ 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 +68,16 @@ public String happilyGreet() {
         -1, 1  | [-1,0,1]
      */
 
+    public int[] constructNumberArray(int lower, int upper){
 
+        int[] numbers = new int[upper-lower + 1];
+        int j = lower;
+        for (int i = 0; i <= upper-lower; i++) {
+            numbers[i] = j;
+            j++;
+        }
+        return numbers;
+    }
 
 
     /*
@@ -81,7 +93,9 @@ The method must return the same string in upper case with exclamation marks (!)
         error, 10   | ERROR!!!!!!!!!!
      */
 
-
+    public String shout(String msg, int nExl) {
+        return msg.toUpperCase() + "!".repeat(Math.max(0, nExl));
+    }
 
 
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index f9de7dd..1be534c 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -9,7 +9,7 @@ public class Extension extends ExtensionBase {
         5. Create a method named bakingTime that returns the number 50
      */
 
-
+    public int bakingTime() { return 50; }
 
 
     /*
@@ -20,7 +20,7 @@ public class Extension extends ExtensionBase {
         and the result of calling the bakingTime method
      */
 
-
+    public int remainingBakeTime(int minInOven) { return bakingTime() - minInOven; }
 
 
     /*
@@ -31,7 +31,7 @@ public class Extension extends ExtensionBase {
         each layer taking 3 minutes to prepare
      */
 
-
+    public int calculatePrepTime(int layers) { return layers * 3; }
 
 
     /*
@@ -44,7 +44,9 @@ public class Extension extends ExtensionBase {
         in the oven. Use your calculatePrepTime method in the calculation
      */
 
-
+    public int totalTimeSpent(int layers, int minInOven) {
+        return calculatePrepTime(layers) + minInOven;
+    }
 
 
 }