On January 4, 1950 the price of a sprocket was $41.03. On January 4, 1966 the price of a sprocket was $13.88. Find the average rate of change in the price of a sprocket from 1950 to 1966. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{13.88-41.03}{1966-1950}= -1.70$ dollars per year.