Can somebody explain how to use a graphing calculator to do this problem?
Here's the story problem...the annual depreciation rate r of a car had an original cost of C dollars, a useful life of n years, and a trade-in value of T dollars. Find the annual depreciation rate of a car that cost $22,000 and was sold 5 years later for 9,000. Give the result to the nearest percent. Formula for problem below...

Question

Can somebody explain how to use a graphing calculator to do this problem?
Here's the story problem...the annual depreciation rate r of a car had an original cost of C dollars, a useful life of n years, and a trade-in value of T dollars.  Find the annual depreciation rate of a car that cost $22,000 and was sold 5 years later for 9,000.  Give the result to the nearest percent.  Formula for problem below...

anonymous · Answer

working on putting it up..equation editor takes a while..

anonymous · Answer

equation editor is not working....may have to give up on this problem..

anonymous · Answer

the formula is r = 1 - (T/C)^2...with the square root symbol for the ^2 you know..and the (T/C)^2 is to the nth root..with an n on the outside you know..