# Calculus

posted by
**Alex** on
.

Suppose that a population of bacteria triples every hour and starts with 700 bacteria.

(a) Find an expression for the number n of bacteria after t hours.

n(t) = ?

(b) Estimate the rate of growth of the bacteria population after 1.5 hours. (Round your answer to the nearest hundred.)

n'(1.5) = ?