A bacteria sample can be modeled by the function f(x)=350(1.20)x which gives the number of bacteria in the sample at the end of x

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb