Question

Given two functions: f(x) = 2x + 5 g(x) = -3x - 6 Solve for g(-1). If f(x) = 7, what is the value of x?

Answer 1

Explanation:

g(x)=-3x-6

g(-1)= -3*-1-6

= 3-6

= -3

f(x)=2x+5

7=2x+5

7-2=2x

5/2=x

hence x=5/2