Marco paid 25.00 for a meal including a 25% tip how much was the meal befor he added the tip

Let p = price of meal before tip was added.

p + 0.25p = 25.00

Solve for p.

1.25p = 25.00

p = 25.00 ÷ 1.25

p = 20

$20

europa2433

europa2433

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