You want to buy some noodles. A 7-ounce package costs $2.52. A 15-ounce package costs $5.55. A 24-ounce package costs $9.12. Which package is the best buy?

A 7-ounce package costs $2.52.

It is the cheapest of the three.

Step-by-step explanation:

$2.52 ÷ 7 = $0.36

$0.36 per ounce

$5.55 ÷ 15 = $0.37

$0.37 per ounce

$9.12 ÷ 24 = $0.38

$0.38 per ounce

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180