Write an exponential equation in the form y = abx whose graph passes through points (2, 18) and (5, 60.75).

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?

Ithink i know it but i want to be sure so can you me out ?

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2