Question

Given f(x) = -3x + 8 and g(x) = x^2 + 5, find the following.

f(2) =
g(-2) =
f(-5) =
g(0) =

Answer 1

f(2)=2,g(-2)=1,f(-5)=23 and g(0)=0

Explanation:

F(2 )=-3×2+8

F(2)=-6+8

F(2)=2

g(-2)=-2^2+5

g(-2)=-4+5

g(-2)=1

F(-5)=-3×-5+8

F(-5)=15+8

F(-5)=23

g(0)=0^2+5

g(0)=0+5

g(0)=5

Answer 2

f(2)= 2
g(-2)=9
f(-5)=23
g(0)=5

just plug in the values in the parentheses for x.