This question has three parts.
Bruce deposited a certain amount of money in a simple interest bearing savings account.
He neither deposited nor withdrew any money from his account for 4 years.
He kept track of the money in his account by making a graph as shown.

Part A:
What was Bruce’s principle (initial amount deposited)

Part B:
How much interest did Bruce earn after 1 year?

Part C:
What was the interest rate that Bruce’s savings account was earning