Demand and supply schedules for designer sport t-shirts Price (dollars per t-shirt) Quantity Supplied (t-shirts per month) Quantity Demanded (t-shirts per month) 3 4 5 6 7 8 9 10 11 12 150 160 170 180 190 200 210 220 230 240 300 280 260 240 220 200 180 160 140 120 Refer to Table 3.5.3. In a YouTube interview, Joe Cool shows off his designer sport t-shirt, setting off a new craze that doubles business on sportswear websites. This is shown as a rightward shift of the demand curve. movement up along the demand curve. leftward shift of the supply curve. leftward shift of the demand curve. rightward shift of the supply curve