Question

Do i just plug in ? i’m confused

Answer 1

Yes, plug them in. 5) (23/2) or 11.5 6) 51

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