Just a year after you launched the expansion of DWJ, inflation has raised your marginal cost by 7% from $198.33 to $212.21. Your elasticity varies for each of the three regions in which you sell your DWJ brand. In the southwestern region, your elasticity is -2.76. In your upper-western region, your elasticity is -3.50. In your New England region, the elasticity is -5.76.
Use %ΔQd/%ΔP = e to estimate the percentage change (decrease) in quantity demanded if you were to raise prices in all three regions by 7%.
a. %ΔQd Southwestern
b. %ΔQd Upper-western
c. %ΔQd New England
