Given f(x) = 5x – 5, find f(a – 4).?

Question:which one of these are correct
A)a – 4
B)5a – 25
C)a – 25
D)5a – 9


f(x) = 5x-5

f(a-4) = 5(a-4)-5 = 5a-20-5 = 5a-25
Just put (a-4) into the equation where the X is.
yeah you're right, B looks right... plug (a-4) in, and u get 5a-25

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