Whodunnit graphing linear inequalities. Who’s the criminal what crime?

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

Acar loses a quarter of its value every year. it is originally worth $35,000. to the nearest dollar,how much will the car be worth in 8 years?

Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )