13. (-/1 Points] DETAILS MY NOTES Determine the simple interest rate at which $2400 will grow to $2492 in 8 months. (Round your answer to two decimal places.) %/year Need Help? Watch Read it 14. (-/1 Points) DETAILS 00 MY NOTES Find the amount (future value) of the ordinary annuity. (Round your answer to the nearest cent.) $1100/semiannual period for 8 years at 3.5%/year compounded semiannually $ Need Help? Read It Watch It MY NOTES 15. (-/1 Points] DETAILS Find the present value of the ordinary annuity. (Round your answer to the nearest cent.) $1200/semiannual period for 9 years at 4%/year compounded semiannually $ Need Help? Read it Watch It