Posted by Anon on Thursday, March 17, 2011 at 11:23pm.
I first want to make it clear that I have only taken Geometry, Algebra I, and preAlgebra. That seemed to clear things up last time.
Question:
Matt bought a car at the cost of 25,000 dollars. This car's value goes down 15% every year.
1. What is the decay factor?
2. Write the equation to model the decay factor.
3. What will the car be worth in 5 years?

Algebra II  Reiny, Friday, March 18, 2011 at 8:34am
If something decreases by 15%, then 85% would be left over.
equation:
value = 25000(.85)^t , where t is the number of years
so in 5 years, t  5
value = 25000(.85)^5 = ......

Algebra II  Anon, Sunday, March 20, 2011 at 12:44am
Thank you c:
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