A fried chicken franchise finds that the demand equation for its new roast chicken product, Roasted Rooster, is given by:
p = 45 - 0.5q
where p is the price in dollars per quarter-chicken serving and q is the number of quarter-chicken servings that can be sold.
Find the price elasticity of demand when the price is set at $4.30 per serving.
Interpret the result: They should lower the price per serving in order to increase revenue.