Me on this confusing math question!

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)

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Find the distance between the point (-3,-4), and (see the picture below)