while in line for popcorn at a movie you see the person in front of you pays $31 for two popcorns three sodas the second person pays $44 for three popcorns and four sodas if you buy one popcorn and one soda how much did it cost?​

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

hi there!

the answer will be d: 2

answer: im sorry i dont get it

step-by-step explanation: