pyq/2021/csat/47

A biology class at high school predicted that a local population of animals will double in size every 12 years. The population at the beginning of the year 2021 was estimated to be 50 animals. If P represents the population after n years, then which one of the following equations represents the model of the class for the population?

(A) P = 12 + 50n

(B) P = 50 + 12n

(C) 50 × (2)^(12n)

(D) 50 × (2)^(n/12)