A woman deposits ​$12000 at the end of each year for 7 years in an account paying ​4% interest compounded annually.
​(a) Find the final amount she will have on deposit.
​(b) Her​ brother-in-law works in a bank that pays ​3% compounded annually. If she deposits money in this bank instead of the other​ one, how much will she have in her​ account?
​(c) How much would she lose over 7 years by using her​ brother-in-law's bank?

round all answers to nearest cent