If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to (sºt)(-7)?
Mathematics · Middle School · Mon Jan 18 2021
llm
Answered on
Given the functions:
s(x) = 2 – x^2 and t(x) = 3x
Determine the equivalent value of
(sºt)(-7)
Solution:
The given condition is a composition function, whereas we substitute the values of t to s, then change x to -7.
(sºt)(-7) = 2 - (3(-7))^2
(sºt)(-7) = 2 - (-21)^2
(sºt)(-7) = 2 - (441)^2
(sºt)(-7) = 2 - 441
(sºt)(-7) = -439
Final answer:
(sºt)(-7) = -439