Use the orange points $($square symbol$)$ to plot the initial short$-$run industry supply curve when there are $10$ firms in the market. $($Hint: You can disregard the portion of the supply curve that corresponds to prices where there is no output since this is the industry supply curve.$)$ Next, use the purple points $($diamond symbol$)$ to plot the short$-$run industry supply curve when there are $20$ firms. Finally, use the green points $($triangle symbol$)$ to plot the short$-$run industry supply curve when there are $30$ firms.