Quantity of Visits Supplied	Total Costs per Week ($)
0	20
1	30
2	60
3	90
4	150
5	230
6	330

1. Determine the marginal cost for each level of output. 20-20=0, 30-20=10, 60-30=30, 90-60=30, 150-90= 60, 230-150=80, 330-230=100
2. If the price per visit is given to be $50, at what level of visits will the maximum profit position be? What are the profits at this level? What is the quantity supplied?

|$50|

1. If the price per visit increases to $90, what will be the quantity supplied (assuming maximizing profits)?