On January 4, 1983 the price of a sprocket was $77.90. On January 4, 2010 the price of a sprocket was $94.56. Find the average rate of change in the price of a sprocket from 1983 to 2010. Round to the nearest cent.

The average rate of change is LaTeX:  \displaystyle \frac{94.56-77.90}{2010-1983}= 0.62 dollars per year.