Tell whether x and y are proportional.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?