diff --git a/csharp-fundamentals-methods.Main/Core.cs b/csharp-fundamentals-methods.Main/Core.cs
index a69b542..c3991b0 100644
--- a/csharp-fundamentals-methods.Main/Core.cs
+++ b/csharp-fundamentals-methods.Main/Core.cs
@@ -27,7 +27,9 @@ 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();
+            //throw new NotImplementedException();
+            string defaultGreeting = "Hello ";
+            return defaultGreeting + name + "!";
         }
 
         //TODO: 2. Increment a number
@@ -36,7 +38,9 @@ Complete this method so that it increases the number given by 1 and returns the
          */
         public int increment(int number)
         {
-            throw new NotImplementedException();
+            //throw new NotImplementedException();
+            int numberToReturn = number + 1;
+            return numberToReturn;
         }
 
         //TODO: 3. Construct a friendly greeting
@@ -50,7 +54,11 @@ Complete this method so that it accepts a name as an input and outputs a friendl
          */
         public string happilyGreet(string name)
         {
-            throw new NotImplementedException();
+            //throw new NotImplementedException();
+            string defaultGreeting = "Hi, ";
+            string endOfGreeting = " :)";
+
+            return defaultGreeting + name + endOfGreeting;
         }
 
 
@@ -69,11 +77,14 @@ Create a method named constructNumberArray that accepts two whole numbers named
 
         public int[] constructNumberArray(int lower, int upper)
         {
+            int[] resultArray = new int[upper - lower +1];
 
-            int[] resultArray = { };
+            for (int i =0; i<resultArray.Length; i++)
+            {
+                resultArray[i] = lower +i;
+            }
 
             return resultArray;
-
         }
 
 
@@ -92,7 +103,16 @@ The number of exclamation marks appended must be determined by the number provid
 
         public string shout(string phrase, int number)
         {
-            return $"";
+            string upperCaseString = phrase.ToUpper();
+
+            string exclamationMark = "";
+
+            for (int i = 0; i < number; i++)
+            {
+                exclamationMark += "!";
+            }
+
+            return upperCaseString + exclamationMark;
         }
 
 
diff --git a/csharp-fundamentals-methods.Main/Extension.cs b/csharp-fundamentals-methods.Main/Extension.cs
index a4461e2..1a09aa5 100644
--- a/csharp-fundamentals-methods.Main/Extension.cs
+++ b/csharp-fundamentals-methods.Main/Extension.cs
@@ -17,9 +17,22 @@ 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();
+            string minutes = v.ToString();
+            //throw new NotImplementedException();
+            if (v > 0)
+            {
+                return "The cake is still baking!";
+            }
+            else if (v < 0)
+            {
+                return "The timer finished ages ago!";
+            }
+            else
+            {
+                return "The cake is ready!";
+            }
         }
 
 
@@ -35,7 +48,18 @@ provided and the prep time per ingredient.
 
         public double estimatePrepTime(string[] strings, int v)
         {
-            throw new NotImplementedException();
+            //throw new NotImplementedException();
+            int preptimePerIngredient = v;
+            
+            if (preptimePerIngredient == 0) 
+            {
+                preptimePerIngredient = 2;
+            }
+
+            int totalPrepTime = strings.Length * preptimePerIngredient;
+
+            return totalPrepTime;
+            
         }
 
 
@@ -51,7 +75,21 @@ public double estimatePrepTime(string[] strings, int v)
 
         public double calculateGramsOfSugar(string[] strings, int v)
         {
-            throw new NotImplementedException();
+            //throw new NotImplementedException();
+            int numberOfLayers = v;
+            string sugar = "sugar";
+            int sugarGrams = 100 * numberOfLayers;
+
+            if (Array.Exists(strings, element => element == sugar))
+            {
+                return sugarGrams;
+            }
+            else 
+            {
+                return 0; 
+            }
+            
+
         }