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A. The amount of money Aria's car is worth over time is an example of exponential decay because it follows a pattern where it decreases by a fixed percentage each year. The value of her car is being multiplied by the same constant (0.85) each year, resulting in a decreasing value over time.
B. The worth of Aria's car each year for 8 years can be described by the sequence:
$36,000, $30,600, $26,010, $22,109, $18,793, $15,974, $13,578, $11,542