Respuesta :

wegnerkolmp2741o

Answer:

-439

Step-by-step explanation:

s (x) =2-x^2

t (x)=3x

s (t(-7))

First find t(-7)

t (-7)=3*-7 = -21

Then find s(-21)

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

shayleeherzberg
The answer would be -439
good job