Answer: D. 12
Explanation:
(f+g)(4)
is the same thing as:
f(4) + g(4) This means to go to graph and find what the function is when x is 4 for both f and g
f(4) = 9 when x =4, y=9
g(4) =3 when x=4, y=3
so:
=f(4) + g(4)
=9 + 3
=12
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