Will purchased a car for $21,000. If V = 21,000(0.85)x gives the value of the car after x years, how many years will it take for the car to be worth half of its original value?

4 years will it take for the car to be worth half of its original value.

Step-by-step explanation:

Given : Will purchased a car for $21,000. If gives the value of the car after x years.

To find : How many years will it take for the car to be worth half of its original value?

Solution :

gives the value of the car after x years.

The car to be worth half of its original value i.e.

Taking log both side,

Approximately the number of years it will take is 4 years.

care to share were the trapezoid shown is ?