Find the value of f(–3) and g(3) if f(x) = –6x + 3 and g(x) = 3x + 21x–3.

f(–3) = 21
g(3) = 9.78

f(–3) = –18
g(3) = –9.78

f(–3) = –3
g(3) = 30.04

f(–3) = 15
g(3) = 8.22

f(-3) = 21

g(3) = 69

Step-by-step explanation:

We have been given the following functions;

f(x) = –6x + 3

g(x) = 3x + 21x–3.

To find f(-3) , we simply substitute x = -3 in the function of f(x);

f(-3) = -6(-3) + 3

      = 21

To find g(3) , substitute x = 3 in the function of g(x);

g(3) = 3(3) +21(3) - 3

      = 69

step-by-step explanation:

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction