will sell you a $15,000 car for $380 a month for 48 months. What is the interest rate (annual)? A. 9.28 percent B. 9.35 percent C. 9.53 percent D. 9.86 percent E. 9.94 percent 15, ouxtt 5. Today is your 21st birthday and you just decided to start saving money so you can retire early. You are going to save $500 a month starting one accumulate $1 million. If you can earn an average of 8 percent on your savings, how old will you be when you retire? month from now. You plan to retire as soon as you can A 33.39 years old B. 42.87 years old C)54.39 years old D. 64.71 years old E. 63.87 years old