A population of flies, P, over a given amount of time, x, is modeled by the expression ​ P(1+r)xP(1+r)x ​ .


Note: r represents percentage rate as a decimal


What does each factor in the expression represent?


Select each correct answer.


P represents the initial amount of flies in the population


P represents the amount of flies at a given time


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


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