A population of flies grows according to the function p(x) = 2(4)x, where x is measured in weeks. A local spider has set up shop and consumes flies according to the function s(x) = 2x + 5. What is the population of flies after two weeks with the introduced spider?

15 flies

23 flies

32 flies

36 flies

Question

A population of flies grows according to the function p(x) = 2(4)x, where x is measured in weeks. A local spider has set up shop and consumes flies according to the function s(x) = 2x + 5. What is the population of flies after two weeks with the introduced spider?

15 flies

 23 flies

 32 flies

 36 flies

skullpatrol · Answer

Any ideas?

mallorysipp234 · Answer

so it's p(2) = 2(4)(2) right since x = the 2 weeks that we're trying to find right?

mallorysipp234 · Answer

but 2 x 2 x 4 = 16. and that's none of the choices. so im confused.

skullpatrol · Answer

Are you sure this function: p(x) = 2(4)x is copied down correctly?

mallorysipp234 · Answer

it's p(x) = 2(4)^x

skullpatrol · Answer

:)

mallorysipp234 · Answer

32! oh okay i see it now.
its 32 right???

mallorysipp234 · Answer

can you help me with this one @skullpatrol @sourwing @donny471

mallorysipp234 · Answer

attachment

skullpatrol · Answer

|dw:1393714055984:dw|