diff --git a/index.js b/index.js
index e69de29bb..c5f0d21e2 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,30 @@
+function shout(string) {
+  return string.toUpperCase()
+}
+
+function whisper(string) {
+  return string.toLowerCase()
+}
+
+function logShout(string) {
+  console.log(string.toUpperCase());
+}
+
+function logWhisper(string) {
+  console.log(string.toLowerCase());
+}
+
+function sayHiToGrandma(string) {
+  var toLowerCase = "I can't hear you!";
+  var toUpperCase = "YES INDEED!";
+  var mixedCase = "I love you, too.";
+  if (string.toLowerCase(string) === string) {
+    return toLowerCase;
+  }
+  else if (string.toUpperCase(string) === string) {
+    return toUpperCase;
+  }
+  else if ("I love you, Grandma." === string) {
+    return mixedCase
+  }
+}