1.) Calculate the elasticity of demand for therapy sessions given the values for price and demand shown in the table. Define what formula you will be using to estimate elasticity, explain why you are using such formula, show all your work, and explain the meaning of your results.

PricePer Hour of Therapy	Demand for Therapy Sessions
40	10
50	2

2.)Assuming that both estimates of elasticity you calculated before are for the same type of therapy and the same market, explain why your results are the same, or different, since you are dealing with different price and demand levels.