N -5 x 4 what is the output when input is n

What is the pattern in the values as the exponents increase?

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?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.