On January 4, 1959 the price of a widget was $75.51. On January 4, 2008 the price of a widget was $48.55. Find the average rate of change in the price of a widget from 1959 to 2008. Round to the nearest cent.

The average rate of change is LaTeX:  \displaystyle \frac{48.55-75.51}{2008-1959}= -0.55 dollars per year.