### 3 Answers

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- 4 weeks ago
Substitute x with -2.

-3 (-2) + 3.

-3 x (-2) = 6

6 + 3 = 9

f(-2) = 9

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- Anonymous4 weeks ago
Just replace x by -2 everywhere:

f(x) = -3x + 3

f(-2) = -3(-2) + 3

. . . . = 6 + 3

. . . . = 9

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