Suppose your friend's parents invest $20,000 in an account paying 6% compounded annually. What will the balance be after 8 years?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.