diff --git a/flow-control.js b/flow-control.js
index 1e28c3aa0e..c14d42ff56 100755
--- a/flow-control.js
+++ b/flow-control.js
@@ -1,19 +1,53 @@
 function basicTeenager(age) {
+  if(age>=13 && age<=19) {
+    return "You are a teenager!"
+  } else{
+    return undefined
+  }
+} 
 
-}
 
 function teenager(age) {
-
+  if (age>=13 && age<=19) {
+    return "You are a teenager!"
+  } else{
+    return "You are not a teenager"
+  }
+  
 }
 
 function ageChecker(age) {
+  if(age>=13 && age<=19) {
+    return "You are a teenager!"
+  } else if (12>=age) {
+    return "You are a kid"
+  } else{ 
+    return "You are a grownup"
+  }
 
 }
 
 function ternaryTeenager(age) {
-
+  if (age>=13 && age<=19) {
+    return "You are a teenager"
+  } else { 
+    return "You are not a teenager"
+}
 }
 
 function switchAge(age) {
-
+   switch (age) { 
+     case 13:
+    case 14:
+    case 15:
+    case 16:
+    case 17:
+    case 18:
+    case 19:
+      return "You are a teenager"
+      break;
+    default:
+      return "You have an age"
+  }
+  
 }