Question

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?

Answer 1

405

Explanation:

Considering the function:

`f(x) = 5(3)^x`

After 4 weeks, means
`x=4`

`f(4) = 5(3)^4\\f(4) = 5(81)\\f(4) = 405`

What will the population be after 4 weeks?

405 insects