A small hot-air balloon has a volume of 15.0 cm3 and is open at the bottom. The air inside the balloon is at an average temperature of 75ºC, while the air inside the balloon has a temperature of 24ºC, and a pressure, on average, of 1.00 atm. The balloon is tethered to prevent it from rising, and the tension in the tether is 10.0 N. Use 0.0290 kg/mol for molar mass of air. (Neglect the gravitational force on the fabric of the balloon.) What is the pressure, on average, inside the balloon?