How do you calculate the average annual compound percentage growth for an item over the period of 1973?

The items are pies that cost $0.20 in 1973 and the current price is $2.35. How do u calculate the average annual compound percentage growth for the item over the period from 1973? Thank you to all the people who answered my last question^^How do you calculate the average annual compound percentage growth for an item over the period of 1973?
The answer is 7.293277%



2008 - 1973 = 35 years

[(2.35/0.20) - 1] = 10.75



get the 35th root of (1+ 10.75) = 1.0729 then deduct 1 = 0.729



then multiply by 100 = 7.29%



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if you have a financial calculator this will be a lot easier. =)