If s(x) = x – 7 and t(x) = 4x2 – x + 3, which expression is equivalent to (ToS) (x)

Home Work Help
1

If s(x) = x – 7 and t(x) = 4x2 – x + 3, which expression is equivalent to (ToS) (x)

a. 4(x – 7)2 – x – 7 + 3
b. 4(x – 7)2 – (x – 7) + 3
c. (4x2 – x + 3) – 7
d. (4x2 – x + 3)(x – 7)