Mark is selling gourmet apples at a price of $2 per pound. currently, he sells 100 pounds of apples per week. this week, mark raises his price to $3, and his sales of apples fall to 75 lbs. mark's initial revenue from apple sales was $ nothing. mark's new revenue from apple sales is $ nothing. since mark's revenue increased when the price of apples rose, the demand for mark's gourmet apples must be ▼ elastic unitary inelastic .