I need help I wasn’t on the zoom and I forgot how to do this stuff

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

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

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section