Write an equation for the sentence: the difference of 6n and 5 is 13

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

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

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2