Suppose the Supply and Demand for a Certain Videotape Are $$\text { supply: } p = \frac { 1 } { 6 } q ^ { 2 } ; \text { demand: } p = - \frac { 1 } { 6 } q ^ { 2 } + 37$$

Multiple Choice

Suppose the supply and demand for a certain videotape are given by: $$\text { supply: } p = \frac { 1 } { 6 } q ^ { 2 } ; \text { demand: } p = - \frac { 1 } { 6 } q ^ { 2 } + 37$$ where p is price and q is quantity. How many videotapes are demanded at a price of $22?

A) About 8 videotapes
B) About 9 videotapes
C) About 11 videotapes
D) About 10 videotapes