Question

If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to (sºt)(-7)?

Answer 1

-439

Explanation:

Got it right on edge

Answer 2

- 439

Explanation:

`s(x)=2-x^2,\ t(x)=3x\\\\(s\circ t)(x)=s\bigg(t(x)\bigg)-\text{exchange x to t(x) = 3x:}\\\\(s\circ t)(x)=2-(3x)^2=2-3^2x^2=2-9x^2\\\\(s\circ t)(-7)-\text{put x = -7 to the equation:}\\\\(s\circ t)(-7)=2-9(-7)^2=2-9(49)=2-441=-439`