SOLUTION: (This is just to know how to write an equation) According to the kellybluebook.com, the average value of a new car after one year is seven-tenths of its original price. Write an e

Question 307058: (This is just to know how to write an equation)
According to the kellybluebook.com, the average value of a new car after one year is seven-tenths of its original price. Write an equation representing the price(P)in dollars of a one-year old car in terms of its original price(X).
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
According to the kellybluebook.com, the average value of a new car after one year is seven-tenths of its original price. Write an equation representing the price(P)in dollars of a one-year old car in terms of its original price(X).
.
Let x = original price
then price after one year:
P = x - (7/10)x
P = x - .7x
P = x(1-.7)
P = .3x

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