A bacteria culture initially contains P(o) cells and grows at the rate dP/dt = kP where k is a growth constant. After an hour the population has doubled.

(a) Determine an expression for the number of bacteria present after t hours.

(b) Computer the number of bacteria present, and the rate of growth, after 2 hours.

(c) After how many hours will the population be 10P(o)

I have no idea how to do this, thanks for any help!