On January 4, 1957 the price of a widget was $98.79. On January 4, 1984 the price of a widget was $14.53. Find the average rate of change in the price of a widget from 1957 to 1984. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{14.53-98.79}{1984-1957}= -3.12$ dollars per year.