For each ordered pair, determine whether it is a solution to 2x - 5y=11. Is it a solution?
(x, y)
(3, -1)
(-7,-5)
(-9,4)
(4,2)

(3, -1) Yes

(-7,-5) Yes

(-9,4) No

(4,2) No

Step-by-step explanation:

Plug them in

(3, -1)

2(3) - 5(-1)

6 + 5 = 11

(-7,-5)

2(-7) - 5(-5)

-14 + 25 = 11

(-9,4)

2(-9) - 5(4)

-18 - 20 = -38

(4,2)

2(4) - 5(2)

8 - 10 = -2

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.