Troyb0y
Troyb0y Troyb0y
  • 02-07-2017
  • Mathematics
contestada

Find the value of f(-4) if f(x) = x2 + 7.

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royalranger
royalranger royalranger
  • 02-07-2017
Just plug in -4 everywhere you see an x:
f(x) = 2x + 7
f(-4) = 2(-4) + 7
f(-4) = -8 + 7
f(-4) = -1
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