A population of flies, P, over a given amount of time, x, is modeled by the expression

P(1+r)^x.

Note: r represents percentage rate as a decimal What does each factor in the expression represent?

Select each correct answer.


(1+r) ​ represents a decay of the fly population


P represents the initial amount of flies in the population


(1+r) represents a growth of the fly population


P represents a number of flies at a given time