Final answer:
The value of Reggie's car increases by 9% each year as per the function representing the car's value over time.
Step-by-step explanation:
The function f(x) = 23,000(1.09)^x represents the value of Reggie's car x years after purchase. The base of the exponent is 1.09 which indicates an annual increase of 9%. Therefore, the car's value is not decreasing by $23,000 each year, nor is it increasing by $23,000 each year. The correct statement about the car's value is that it increases by 9% each year.