You can buy 5 stickers for $3. Using this rate, what is the cost for 12 stickers? $6.15 $6.60 $7.02 $7.20

$7.20

Step-by-step explanation:

3/5=0.6

0.6*12=7.20

$7.20

Step-by-step explanation:

3/5= .60

.60 cents per sticker

.60 * 12 stickers =$7.20

step-by-step explanation:

cats

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