Help ASAP please, I have exammm

Which property is illustrated by the statement given below? raj raj.

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done

Which of the following statement about pascal's triangle are true?