What is this expression translated into words? 2n + 1

a
one plus 2 divided by a number n
b
2 times 1 added to a number n
c
two times a number n added to one

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)