How to solve 8(4+5)(4-2) step by step

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?

How can you check that you have correctly converted frequencies to relative frequencies?

A. 120 degrees b. 90 degrees c. 30 degrees d. 60 degrees