A suit was marked with a 25% discount. If the discount is $40.00, what was the original price of the suit?

Step-by-step explanation:

25 percent=$40.00

100-25=75 percent

75/100×40.00

300/10

$30

So the original price is 40+30=$70

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

30 people weigh 160 pounds or more