On January 4, 1955 the price of a widget was $40.68. On January 4, 1972 the price of a widget was $50.59. Find the average rate of change in the price of a widget from 1955 to 1972. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{50.59-40.68}{1972-1955}= 0.58$ dollars per year.