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Belinda is thinking about buying a car for $45,000. The table below shows the projected value of two different cars for three years. Number of years 1 2 3 Car 1 (value in dollars) 40,500 36,450 32,805 Car 2 (value in dollars) 42,000 39,000 36,000 Part A: What type of function, linear or exponential, can be used to describe the value of each of the cars after a fixed number of years? Explain your answer. (2 points)

Sagot :

A. You can define if the data is lineal or exponential if you see the diference between the data every year (variation).

In this case the value of the car 1 has a variation is:

-4500 dollars and -3195 dollar it means that the variation is not the same every year so the function is not lineal so it has to be an exponencial function.

In the value of the car 2 the variation is:

-3000 and -3000, since the variation is the same every year the function is lineal.

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