F(x) = x^2 - 5x - 14
g(x) = x - 7

(f + g)(-3) =
(f - g)(-3) =
(g - f)(-2) =

See attached image.

Step-by-step explanation:

Calculate the vales of each function (f and g) for the value of x as indicated.  Then perform the arithmetic operation on the results.  For example:

f(-3) = 10

g(-3) = -10

Then (f+g)(-3) is 10 - 10 = 0

(f-g)(-3) is 10 -(-10) = 20

and so on, as shown.

its 8

step-by-step explanation: