Answer:
Yes, plug them in. 5) (23/2) or 11.5 6) 51
Step-by-step explanation:
Since you're simply finding the functions, yes you plug in the variables directly.
5) f(x) = 10 - (9 / 2) * x
f(-(1/3)) = 10 - (9 / 2) * -(1/3)
= (23/2) or 11.5
6) g(20) = |-3 * (20) + 16|
= |-44|
= 44
h(7) = -(7)^2 + 8 * (7)
= 7
g(20) + h(7) = 44 + 7
= 51
