Done.

index.js

@@ -1,11 +1,31 @@
-function scuberGreetingForFeet(){
+function scuberGreetingForFeet(feet){
   // Write your code here!
+  // let feet = 0;
+  if (feet <= 400){
+    return "This one is on me!"
+  } else if(feet >= 2000 && feet<= 2499) {
+    return "I will gladly take your thirty bucks."
+  } else  {
+    return "No can do."
+
+  }
 }
 
-function ternaryCheckCity(){
+function ternaryCheckCity(city){
   // Write your code here!
+  return city === "NYC" ? "Ok, sounds good.":"No go.";
+
 }
 
-function switchOnCharmFromTip(){
+function switchOnCharmFromTip(tip){
   // Write your code here!
+switch (tip){
+case "generous":
+  return "Thank you so much.";
+  case "not as generous":
+    return "Thank you.";
+    default:
+    return "Bye.";
+}
+
 }