Which exponential function has an x-intercept?
A.
f(x) = 100x−5 − 1
B.
f(x) = 3x−4 + 2
C.
f(x) = 7x−1 + 1
D.
f(x) = -8x+1 − 3

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)