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If f(x)= 4x + 5, what is the value of f(-3)?

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Hey there,

The question is asking us to solve for "y" when you plug in -3 for x.

First step would be to plug in -3 for x in the equation:

  • f(-3) = 4(-3) + 5

Now you multiply by 4 and then add 5 to get your answer:

  • y = -12 + 5 = y = -7

The value of f(-3) would be -7.

Hope I helped,

Amna

User Flylib
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