If an initial population of 20 rats grew to 25 after the first year, which of the following exponential functions best models the population of rats (P) with respect to the number of years (t)?
Q1. If an initial population of 20 rats grew to 25 after the first year, which of the following exponential functions best models the population of rats (P) with respect to the number of years (t)?
Answer: P=20(1.25)^t
Explanation: Population grew from 20 to 25 in one year, a growth factor of 1.25 per year. The exponential model is P = 20 × (1.25)^t.