A culture of bacteria triples each hour

MATHEMATICS · Single correct · AP · AP Precalculus · Exponential and Logarithmic Functions · Exponential and Logarithmic Functions

Problem

A culture of bacteria triples each hour. If the initial population is

P

, which one of the following expressions gives the number of bacteria after

n

hours? (a)

P\,3n

(b)

P\,3^{n}

(c)

P\,3^{n-1}

(d)

P\,2^{n}