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If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to (s t)(-7)? A. -439 B. -141 C. 153 D. 443 please answer quick this test is timed!

Answer :

chikafujiwara

We're trying to find [tex]s(t(-7))[/tex].

[tex]t(-7)=3(-7)[/tex]

[tex]t(-7)=-21[/tex]

[tex]s(-21)=2-(-21)^2[/tex]

[tex]s(-21)=2-441[/tex]

[tex]s(-21)=-439[/tex]

Hope this helps.

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