math
posted by ash .
at the end of every 3 months, Rita deposits $100 into an account that pays 5% compounded quarterly. After 5 yrs, she puts the accumulated amount into a certificate of deposit paying 8.5% compounded semiannually for 1 yr. when this certificate matures, how much will Teresa have accumulated?

amount after 5 yrs = 100 (1.0125^20  1)/.0125
then multiply that result by (1.0425)^2