momo0528 momo0528

07-12-2018
Mathematics

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Help ASAP!
What is f(g(–1)) for f(x) = 2x – 3 and g(x) = x2 + 11?

A)12
B)21
C)32
D)36
E)45

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

07-12-2018

Answer:

B)21

Step-by-step explanation:

g(x) = x^2 +11

g(-1) = (-1)^2 +11

g(-1) = 1+11 =12

f(x) = 2x-3

substitute g(-1) = 12 in

f(12) = 2*12-3

f(12) = 24-3 = 21

f(g(-1)) = f(12) = 21

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