Question

The balance in two separate bank accounts grows each month at different rates. The growth rates for both accounts are represented by the functions f(x) = 2x and g(x) = 4x + 12. In what month is the f(x) balance greater than the g(x) balance?

A.Month 6
B.Month 5
C.Month 4
D.Month 3

Answer 1

First, solve at which month does the two bank accounts be equal. Since  f(x) = 2x and g(x) = 4x + 12, equating them 2x = 4x +12 Solving for x = -6 Meaning there is no way that the two account be equal and there is no way that f(x) will be greater than g(x)