At the start of an experiment, a bacteria colony has mass grams. After two hours,
grams. Find the growth rate *r* of the colony. Find the mass of the
colony after 10 hours.

> solve(M=M0*exp(r*t),r);

> M0:=2*10^(-9);

> M2:= 1.5*10^(-8);

> r:=solve(M2 = M0 * exp(r*2), r);

> mass_10 := M0 * exp(r*10);

The growth rate of the colony is *r* = 1.00745. Using this
information, the mass of the colony after 10 hours is .

Tue Sep 24 13:59:38 EDT 1996