Kailey plays video games for x hours a month. Trent plays video games four hours more than Kailey and Megan plays two times more than Trent. Which expression represents the amount of time Megan spends playing video games?

A). 2 (4x)

B). 2x + 4

C). 2x - 4

D). 2 (x + 4)

D. 2 (x + 4)

Now you get that answer by working the problem. For instance, Kailey plays x hours per month, so we get

K = x

Now Trent plays 4 more hours than Kailey, so we get

T = K + 4.

Since we know that K = x, we can substitute x for K and get

T = x + 4

Now Megan plays two times as much as Trent. So we get

M = 2T

But since T = x + 4 we can subsitute x + 4 for T, getting

M = 2 (x + 4)

We need the parenthesis because multiplication has a higher priority than addition and without the parenthesis the multiply by 2 wouldn't have affected the addition of 4.