Kevin wants to purchase 2.5 pounds of beef and 1.8 pounds of chicken,. how much does he spend?

How do you solve a question like this?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.