After getting her first job, a college graduate wants to begin saving money so she can pay cash for a new car. She wants to save enough each month to have $21,000 at the end of 4 years, and her savings account pays 4% interest, compounded monthly. How much will she have to save each month to reach her goal? Express your answer in $ to the nearest whole $.

Question

After getting her first job, a college graduate wants to begin saving money so she can pay cash for a new car.  She wants to save enough each month to have $21,000 at the end of 4 years, and her savings account pays 4% interest, compounded monthly.  How much will she have to save each month to reach her goal?  Express your answer in $ to the nearest whole $.