Darnell plans to finance $280,000 for a new home through a 30-yr mortgage. a) Find his monthly payment, assuming an annual interest rate of 6%, compounded monthly. b) Find his monthly payment, assuming an annual interest rate of 7%, compounded monthly. c) Assume that Darnell makes every payment. How much will he save in interest over 30 years if he selects the 6% rate? What is the correct formula for this situation? A. A = p[(1 + r)^nt - 1]/r B. (1 + r)^nt = p[(1 + r)^nt - 1]/r a) Darnell's monthly payment with 6% interest is $ (Simplify your answer. Do not round until the final answer. Then round to two decimal places as needed. Do not include the symbol in your answer.) b) Darnell's monthly payment with 7% interest is $ (Simplify your answer. Do not round until the final answer. Then round to two decimal places as needed. Do not include the symbol in your answer. c) Darnell will save $ if he chooses the 6% rate. (Simplify your answer. Do not round until the final answer. Then round to two decimal places as needed. Do not include the symbol in your answer.)