State whether each of the following events will result in a movement along the demand curve for McDonald’s Quarter Pounder hamburgers or whether it will cause the curve to shift. If the demand curve shifts, indicate whether it will shift to the left or to the right and draw a graph to illustrate the shift.
a. The price of Burger King’s Whopper hamburger declines.
b. McDonald’s distributes coupons for $1.00 off the purchase of a Quarter Pounder.
c. Because of a shortage of potatoes, the price of French fries increases.
d. McDonald’s switches to using fresh, never-frozen beef patties in its Quarter Pounders.
e. The U.S. economy enters a period of rapid growth in incomes.