Sandy wiches sells fresh sandwiches at a beach location, management has determined that on a typical day, demand can be described by the following equation: Qd = 1200 - 200Px
a. if p = $3.00, determine the number of sandwiches sold and the elasticity of demand at the price
b. if price is increased to $4.00, do you expect demand to be more or less elastic after the price increase? Please explain why