The number of fruit flies in a jar triples every week. The function f(x) = 5(3)x models the insect population after x weeks. To the nearest whole number, what will the population be after 4 weeks?

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8