What is the formula for measuring the price elasticity of supply? Es = (Click to select)percentage change in quantity supplied / percentage change in pricepercentage change in quantity demanded / percentage change in incomepercentage change in quantity demanded / percentage change in price Suppose the price of apples goes up from $20 to $23 a box. In direct response, Goldsboro Farms supplies 1300 boxes of apples instead of 1200 boxes. Compute the coefficient of price elasticity (midpoints approach) for Goldsboros supply. Instructions: Round your answer to two decimal places. Es = Is its supply elastic, or is it inelastic? Supply is (Click to select)elasticinelastic.