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