Use the functions f(x) = 3x -4 and g(x) =x(squared) + 2

a.f(7)
b. g(5)
c. f(-5)
d. g(-3)
e. x when f(x) -7

To find the value of a function at a specific input, you need to substitute the input value into the function and then evaluate it.

a. To find f(7), you substitute 7 into the function f(x) = 3x - 4:
f(7) = 3(7) - 4 = 21 - 4 = 17

b. To find g(5), you substitute 5 into the function g(x) = x^2 + 2:
g(5) = (5)^2 + 2 = 25 + 2 = 27

c. To find f(-5), you substitute -5 into the function f(x) = 3x - 4:
f(-5) = 3(-5) - 4 = -15 - 4 = -19

d. To find g(-3), you substitute -3 into the function g(x) = x^2 + 2:
g(-3) = (-3)^2 + 2 = 9 + 2 = 11

e. To find x when f(x) = -7, you set f(x) equal to -7 and solve for x:
-7 = 3x - 4
3x = -3
x = -1

Therefore:
a. f(7) = 17
b. g(5) = 27
c. f(-5) = -19
d. g(-3) = 11
e. x when f(x) = -7 is x = -1