On January 4, 1973 the price of a stembolt was $77.92. On January 4, 1984 the price of a stembolt was $28.97. Find the average rate of change in the price of a stembolt from 1973 to 1984. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{28.97-77.92}{1984-1973}= -4.45$ dollars per year.