Apopulation 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