find the amount that Juanita should invest in an account paying 6.15% annual interest so that after20 years, she will have $50,000 if the interest is compounded monthly
50,000 = A [ 1 + .0615/12] ^[12 *20]
50,000 / [ 1 + .0615/12]^[240] = A = about $14660.61
