diff --git a/csharp-fundamentals-methods.Main/Core.cs b/csharp-fundamentals-methods.Main/Core.cs
index a69b542..67ac1dc 100644
--- a/csharp-fundamentals-methods.Main/Core.cs
+++ b/csharp-fundamentals-methods.Main/Core.cs
@@ -27,7 +27,7 @@ logic. See the example below and take some time to break it down and understand
         //TODO: 1. Create a method that accepts a name and returns a greeting      
         public string greet(string name)
         {
-            throw new NotImplementedException();
+            return $"Hello {name}!";
         }
 
         //TODO: 2. Increment a number
@@ -36,7 +36,7 @@ Complete this method so that it increases the number given by 1 and returns the
          */
         public int increment(int number)
         {
-            throw new NotImplementedException();
+            return number + 1;
         }
 
         //TODO: 3. Construct a friendly greeting
@@ -50,7 +50,7 @@ Complete this method so that it accepts a name as an input and outputs a friendl
          */
         public string happilyGreet(string name)
         {
-            throw new NotImplementedException();
+            return $"Hi, {name} :)";
         }
 
 
@@ -69,9 +69,12 @@ Create a method named constructNumberArray that accepts two whole numbers named
 
         public int[] constructNumberArray(int lower, int upper)
         {
-
-            int[] resultArray = { };
-
+            int[] resultArray = new int[(upper - lower + 1)];
+            for (int i = 0; i < resultArray.Length; i++)
+            {
+                resultArray[i] = lower;
+                lower++;
+            }
             return resultArray;
 
         }
@@ -92,9 +95,13 @@ The number of exclamation marks appended must be determined by the number provid
 
         public string shout(string phrase, int number)
         {
-            return $"";
+            StringBuilder sb = new StringBuilder();
+            sb.Append(phrase);
+            for (int i = 0; i < number; i++)
+            {
+                sb.Append('!');
+            }
+            return sb.ToString().ToUpper();
         }
-
-
     }
 }
diff --git a/csharp-fundamentals-methods.Main/Extension.cs b/csharp-fundamentals-methods.Main/Extension.cs
index a4461e2..dde766d 100644
--- a/csharp-fundamentals-methods.Main/Extension.cs
+++ b/csharp-fundamentals-methods.Main/Extension.cs
@@ -17,9 +17,17 @@ public class Extension
         "The cake is still baking!" if there are any remaining minutes left,
         and "The timer finished ages ago!" if the remaining minutes is a negative number
      */
-        public double timerStatus(int v)
+        public string timerStatus(int v)
         {
-            throw new NotImplementedException();
+            if (v == 0)
+            {
+                return "The cake is ready!";
+            }
+            else if (v > 0)
+            {
+                return "The cake is still baking!";
+            }
+            return "The timer finished ages ago!";
         }
 
 
@@ -35,7 +43,11 @@ provided and the prep time per ingredient.
 
         public double estimatePrepTime(string[] strings, int v)
         {
-            throw new NotImplementedException();
+            if (v == 0)
+            {
+                return strings.Length * 2.0;
+            }
+            return strings.Length * (double)v;
         }
 
 
@@ -51,7 +63,11 @@ public double estimatePrepTime(string[] strings, int v)
 
         public double calculateGramsOfSugar(string[] strings, int v)
         {
-            throw new NotImplementedException();
+            if (strings.Contains("sugar"))
+            {
+                return 100 * (double)v;
+            }
+            return 0.0;
         }