Which measurement is equivalent to 21 yards? a) 1.75 ft b) 7 ft c) 63 ft d)252 ft

The difference between tax advoidance and tax evasion

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?

Can someone tell me if this is perpendicular? !