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15-10-2020
Mathematics

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What is f(g(x)) when f(x) = 5x + 3, and g(x) = 3x2 + 3?
A) f(g(x)) = 8x^2 + 6
B) f(g(x)) = 15x^2 + 18
C) f(g(x)) = 75x^2 + 90x + 30
D) f(g(x)) = 255x^2 + 270x + 84

Respuesta :

Аноним Аноним

15-10-2020

Answer:

B) f(g(x)) = 15x² + 18

Step-by-step explanation:

Plug the entire equation of g(x) in for the x in f(x)

f(g(x)) = 5(3x² + 3) + 3

f(g(x)) = 15x² + 15 + 3

f(g(x)) = 15x² + 18

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