diff --git a/flow-control.js b/flow-control.js
index 1e28c3aa..8134127b 100755
--- a/flow-control.js
+++ b/flow-control.js
@@ -1,19 +1,43 @@
 function basicTeenager(age) {
-
-}
-
-function teenager(age) {
-
-}
-
-function ageChecker(age) {
-
-}
-
-function ternaryTeenager(age) {
-
-}
-
-function switchAge(age) {
-
-}
+ if (age >= 13 && age <= 19) {
+ return "You are a teenager!"
+ }
+  }
+
+  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 (age <= 12) {
+     return "You are a kid"
+ } else if (age >= 20) {
+   return "You are a grownup"
+ }
+  }
+
+  function ternaryTeenager(age) {
+    return  age >= 13 && age <= 19 ? "You are a teenager" :
+ "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";
+ default:
+ return "You have an age";
+ }
+  }