Duke purchased six quarts of orange juice for $13.10 find the unit price of quart rounded to the nearest cent

$2.20 per quart

Step-by-step explanation:

I divided 13.10 by 6, to get 2.1833333333333333, so I rounded the eight, and got 2.2

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

the answer is 489

step-by-step explanation: