WILL MARK BRAINLIEST The number of bacteria in an experiment can be represented by f(x) = 4x, where x represents the number of hours. What is x when f(x) = 64? A.x = 60; In the 60th hour there will be 64 bacteria. B.x = 3; In the 3rd hour there will be 64 bacteria C.x = 16; In the 16th hour there will be 64 bacteria. D.x = 4; In the 4th hour there will be 64 bacteria.