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Given f(x) = 3x + 9, find x when f(x) = 21. A) 3 B) 4 C) 7 D) 10
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5 votes
Given f(x) = 3x + 9, find x when f(x) = 21.

A)
3
B)
4
C)
7
D)
10

User Pzed
by
4.3k points

1 Answer

4 votes

Answer:

B)

Explanation:

3(4) + 9 = 21

User Emalcolmb
by
4.2k points
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