Plz help! Brainlist will be picked!

Answer:
A. 35
B. 22
C. 11
Step-by-step explanation:
f(x)=5x
f(7) =5(7)
f(7) =35
f(x) =x +13
f(9) = 9+ 13
f(9) =22
f(x)= 3x -1
f(4) = 3(4) -1
f(4) = 12 -1
f(4) = 11
Answer:
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Step-by-step explanation:r