Idfk m8 help pls lol

A is the answer.

Step-by-step explanation:

The answer A shows: c/4 = $4.25

c = equals the total cost of the sundae.

the total cost is $17.

$17/4 = $4.25, the price each of the 4 friends paid.  

Which means the answer is A.

Hope this helps!

gaddgad

step-by-step explanation:

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