HELP ME PLEASE Anatomy and physiology

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.