Boyle’s law states that if the temperature of a gas stays constant, then the pressure varies inversely to the volume of the gas. Braydon, a scuba diver, has a tank that holds 6 liters of air under a pressure of 220 pounds per square inch (psi). Write the equation that relates pressure, p, to volume, v. If the pressure increases to 330 psi, how much air is held in braydon’s tank?.