Homework Help: math

Posted by jen on Sunday, March 7, 2010 at 8:41pm.

you purchase an suv for $26,000. A year later the car is worth only $24,800. If the value of the car continues to depreciate at that rate,
a. find the linear equation that determines the value of the car based on the number of years you own it.
b. when will the car be worth $500?

math - Reiny, Sunday, March 7, 2010 at 8:54pm
rate = -1200 per year

Value = -1200t + 26000

b) set value = 500
500 = -1200n + 26000
1200n = 21000
n = 17.5

In about 17 and a half years

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