Answer
Part a)
At Price 3 = 15
At Price 2 = 10
At Price 1 = 5
Part b)
Refer to graph as attached under working
Part c)
Change in Quantity Supplied
At Price 3 = 11
At Price 2 = 8
At Price 1 = 5
Part d)
Change in Supply
Work Step by Step
Part a)
Refer to graph as given in the textbook
EG: when price = 3, the point of quantity supplied would be 15
Part b)
Refer to graph as attached
Part c)
At Price 3 = 15-4 = 11
At Price 2 = 10-2 = 8
At Price 1 = 5-0 = 5
Part d)
The supply curve has shifted leftward, and at each price, the quantity supplied has changed to a point that is not on the original supply curve, hence it is a change in supply