Rebecca borrows $10,000 at 18% compounded annually. She pays off the loan over a 5-year period with annual payments, starting at year 1.

1.  Rebecca borrows $10,000 at 18% compounded annually. She pays off the loan over a 5-year period with annual payments, starting at year 1. Each successive payment is $700 greater than the previous payment.

(a) How much was the second payment?

(b) What is the equivalent uniform series (if she was going to pay the loan in 5 equal payments)?