Question

Evaluate the fuction when x=-4, 3 and 5x (show work)

3) f(x)=2x-5
f(-4)=
4) g(x)=-x-1
g(-4)=

f(-4)=
g(3)=
f(5x)=
g(5x)=

Answer 1

Explanation:

f(x) = 2x - 5

g(x) = -x - 1

f(-4) = 2×-4 - 5 = -8 - 5 = -13

g(-4) = -(-4) - 1 = 4 - 1 = 3

g(3) = -3 - 1 = -4

f(5x) = 2(5x) - 5 = 10x - 5 = 5(2x - 1)

g(5x) = -(5x) - 1 = -5x - 1