please answer with reason

2 2 points The formula po . go + D(p) dp is the formula for J po O consumer willingness and ability to spend O consumer demand O consumer surplus consumer expenditure OO elasticity of demand 4 2 points Demand for a product is D(p) = 53.4(0.9758) thousand units at a price of Sp per unit. What is the elasticity of demand at a price of $49? Round your answer to two decimal places. Type your