Answer:
The correct option is -439
Step-by-step explanation:
We have given that s(x) = 2 – x2 and t(x) = 3x. We have to find the equivalent value.
s(x) = 2 – x2
t(x) = 3x
(s o t)(x)=s(t(x))
s(t(x)) = 2-(3x)^2 = 2-9x^2
So, now putting the value of s of t(x) as (-7) we will get the value as:
(s o t)(-7) = 2-9(-7)^2 = 2 - 9(49)
(s o t)(-7) = 2-441
(s o t)(-7) = -439
Thus the correct answer is option A...
