On January 4, 1970 the price of a widget was $39.46. On January 4, 1979 the price of a widget was $95.57. Find the average rate of change in the price of a widget from 1970 to 1979. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{95.57-39.46}{1979-1970}= 6.23$ dollars per year.