(Compound interest) To what amount will the following investments accumulate? a. $5,000 invested for 10 years at 9 percent compounded annually b. $7,900 invested for 6 years at 9 percent compounded annually c. \$755 invested for 11 years at 11 percent compounded annually d. $23,000 invested for 4 years at 5 percent compounded annually a. To what amount will $5,000 invested for 10 years at 9 percent compounded annually accumulate? (Round to the nearest cent.) b. To what amount will $7,900 invested for 6 years at 9 percent compounded annually accumulate? (Round to the nearest cent.)