Suppose Jennifer deposits $500 in an account at the end of this year. $400 at the end of the next year, and $300 at the end of the following year. If her opportunity cost rate is 7.5 percent, (a) how...

Suppose Jennifer deposits $500 in an account at the end of this year. $400 at the end of the next year, and $300 at the end of the following year. If her opportunity cost rate is 7.5 percent, (a) how much will be in the account immediately after the third deposit is made? (b) How much will be in the account at the end of three years if the deposits are made at the beginning of each year?