We can pass values into a function with arguments. You can use a return statement to send a value back out of a function.
Example
function plusThree(num) {
return num + 3;
}
var answer = plusThree(5); // 8
plusThree takes an argument for num and returns a value equal to num + 3.
Create a function timesFive that accepts one argument, multiplies it by 5, and returns the new value.