Respuesta :

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.

頑張って!