Question

HelpPlease!!!

If s(x)= 2-x2 and t(x)=3 which value is equivalent to s•t(-7)

Answer 1

i think the answer is d

Answer 2

The correct answer option is -439.

Explanation:

We are given the following two functions and we are to find the value of
`( s o t ) ( -7 )`:

`s ( x ) = 2 - x ^ 2` and
`t ( x ) = 3`

`(s o t)(x)=s(t(x))`

`(s o t)(-7)=s(t(-7))`

`x=-7` →
`t(-7)=3(-7)` →
`t(-7)=-21`

`(s o t)(-7)=s(t(-7))=s(-21)`

`x=-21` →
`s(-21)=2-(-21)^2=2-441` →
`s(-21)=-439`

`(s o t)(-7)=s(t(-7))=s(-21)=-439`