2) Anita Burger purchased 14 gallons of gas for $34.72. How much did she pay
for each gallon?

$2.48

Step-by-step explanation:

We need to divide $34.72 by 14 to find the individual price of each gallon. You ca do this any method you like but you receive $2.48 as an answer

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