If f(x) = -5x + 1 find f(3).

When you see f(3), this means that you need to replace the x-values with the 3.

So for f(x) = -5x + 1, you write down

f(3) = -5(3) +1

= -15 + 1

= -14

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If f(x) = -5x + 1 find f(3)