Statistics- hypothesis and test statistic

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

The function models the number of accidents

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)