Asked by Monica

Let f(x)=9x^2+6x-8, find f(-7)
Answered by Reiny
f(x) = 9x^2 + 6x - 8
f(-7) = 9(-7)^2 + 6(-7) - 8
= 441 - 42 - 8
= 391
Answered by Monica
Much appreciated!!!
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