I got D because if you simply add you get D
Answer:
x + 3y = 21
Step-by-step explanation:

Equation of the line: y =mx+ b

Multiply the equation by 3
3y = -x + 21
x + 3y = 21
8x=6x+20
Btw I figures it out x=10
I think it’s Coupon A because the price should be 42.25 or about 42 dollars
The answer is D.
Because you want to find the rewrite way of distributive right? 2(9+3)
Therefore it’s (2x9) + (2x3)