I need help with these simple interest questions.

What principal will have a future value of $7956.00 at 3.0% in eight months? The principal is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)At what rate of interest must a principal of $1545 be invested to earn interest of $58.93 in 150 days? The required interest rate is -|%. (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed.)Ca r10 invested $2504.03 in a 268dav term deposit at 6.92% pa. Using the future value formula, 8 = P(1 + rt), determine how much the investment will be worth at maturity. The future value is $|:. (Round the nal answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)