On January 4, 1976 the price of a sprocket was $100.44. On January 4, 1991 the price of a sprocket was $92.35. Find the average rate of change in the price of a sprocket from 1976 to 1991. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{92.35-100.44}{1991-1976}= -0.54$ dollars per year.