b and c??

(a) How many years will it take for $7500 to accumulate to $9517.39 at 3% compounded semi-annually? (b) Over what period of time will money triple at 9% compounded quarterly? (c) How many years will it take for a loan of $10,000 to amount to $13,684 at 10.5% compounded monthly? (a) It will take 8 years. (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed.) (b) The money will triple in 12.34 quarters. (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed.)