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07-08-2016
Mathematics

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I Need Help....... Let f(x) = -3x - 4 and g(x) = 2x - 6. Find (f o g)(-7)
A) 28
B) -20
C) 17
D) 56

Respuesta :

07-08-2016

Hello,

Answer D 56

(fog)(-7)=f(g(-7))=f(2*(-7)-6)=f(-20=-3*(-20)-4=60-4=56

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