If f(x) = 4x - 2, and f(a)= 18, what is the value of a?

Andrew Duffy asked Jan 19, 2023

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Andrew Duffy asked Jan 19, 2023

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26 votes

Answer:

a= 5

Explanation:

all you are doing is replace f(x) with f(a) then solve for a

remember x and a are the same thing

$18=4a-2\\4a=20\\a=5$

Noriyuki answered Jan 23, 2023

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