Arestaurant earns $1073 on friday and $1108 on saturday. write and solve an equation to find the amount xx (in dollars) the restaurant needs to earn on sunday to average $1000 per day over the three-day period. write your equation so that the units on each side of the equation are dollars per day.

answer:

3/4·(2·x - 7) ≤ 5

3·(2·x - 7) ≤ 20

2·x - 7 ≤ 20/3

2·x ≤ 20/3 + 7

2·x ≤ 20/3 + 21/3

2·x ≤ 41/3

x ≤ 41/6

answer:

x = 7, y = 10.5.

step-by-step explanation:

y = 2x - 3.5

-2y = -x - 14

multiply the first equation by 2:

2y = 4x - 7  

now add this equation   to the second one:

0 = 3x - 21

3x = 21

x = 7.

now substitute x = 7 in the first equation to fund the value of y:

y = 2(7) - 3.5

y = 10.5.