Given the products below and the events that affect them, indicate what happens to demand for them. Identify the determinant of demand that causes the shift, and show the shift graphically.
(a) Blue jeans. The wearing of blue jeans becomes less fashionable among consumers.
(b) Computers. The consumer gets an hourly raise at work.
(c) Lettuce. There are sales at the local grocery stores for salad dressings.
(d) Chicken. Beef prices rise because severe winter weather reduces cattle herds.