Final answer:
The value of the car 23 years after it was purchased is approximately $2,900.
Step-by-step explanation:
To find the value of the car 23 years after it was purchased, we need to understand the depreciation rate. The car depreciates by one half every 4.5 years, which means it loses half of its value every 4.5 years. So after 4.5 years, the car's value will be $47,000/2 = $23,500. After another 4.5 years, the car's value will be $23,500/2 = $11,750. Similarly, after 13.5 years, the value will be $11,750/2 = $5,875. Finally, after 23 years, the value will be $5,875/2 = $2,937.50.
Rounding this value to the nearest hundred dollars, the value of the car 23 years after it was purchased is approximately $2,900.