JavaScript Quiz

This is a quiz - remember that quizzes should be done individually with no outside help

Problem #1: Please run this JavaScript and tell me whether the output is correct. If it is not, explain the error and fix it.
rainfall.html

The next three programs are not working. You need to debug them and send me the working programs.

Problem #2: order.html

Problem #3: invest.html

Problem #4: bonus.html