Please can you give me the answer to these questions! I need this by today!

Ill mark the brainliest if you me with the these three questions 7,8,9

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)

Simplify. (-3ab^3)^4 a. -7ab^12 b. -12a^4b^7 c. -81a^4b^7 d. 81a^4b^12