Answer:
The introduction of air bags in cars
More scoops of raisins in each package of Raisin Bran
Explanation:
In the case when the quality of the prodcut would reduce from one year to the next year but the price would remains same so the dollar value would decline as the same amount would be charged but the quality would be worse in the other case the quality would rise so the price would also rised
Therefore the above represent the situations