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03-10-2019
Mathematics

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Find the value of f(−9) and g(−2) if f(x)=−5x−2 and g(x)=3x2−21x.

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emily10898Emily10898 emily10898Emily10898

03-10-2019

Answer:

F(-9) = -42

G(-2) = 54

Step-by-step explanation:

f(-9) = 5(-9) - 2

-40 - 2 = -42

[tex]g(-2) = 3x^{2} - 21x[/tex]

[tex]3(-2)^{2} - 21(-2)[/tex]

[tex]3(4) + 42[/tex]

[tex]12 + 42 = 54[/tex]

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