diff --git a/index.js b/index.js
index 8f86e134cb..34b5019430 100644
--- a/index.js
+++ b/index.js
@@ -1,11 +1,28 @@
-function scuberGreetingForFeet(){
-  // Write your code here!
-}
+function scuberGreetingForFeet(depth){
+  
+  if (depth <=400) {
+      return 'This one is on me!'
+    } else if (depth <= 2000) {
+      return 'That will be twenty bucks.'    
+    } else if (depth <= 2500) {
+      return `I will gladly take your thirty bucks.`
+    } else {
+      return `No can do.`
+    }
+} 
 
-function ternaryCheckCity(){
-  // Write your code here!
+function ternaryCheckCity(city){
+  return city === `NYC`?`Ok, sounds good.` : `No go.`
 }
 
-function switchOnCharmFromTip(){
-  // Write your code here!
+function switchOnCharmFromTip(tip){
+  switch(tip) {
+    case `generous`:
+      return `Thank you so much.`
+    case `not as generous`:
+      return `Thank you.` 
+    default:
+      return `Bye.`
+
+  }
 }
\ No newline at end of file