A mixture of gasoline vapor and air is placed in an engine cylinder. the piston has an area of 7.4 * 10 ^-3 m ^ 2 and is displaced inward by 7.2 * 10 ^-2 m. If 9.5 * 10 ^5 Pa of pressure is placed on the piston, how much work is done during this process? Is work being done on or by the gas mixture.