Final answer:
The probability that a car required over $300 for maintenance during its first year is 13.5%
Step-by-step explanation:
The cost of maintaining a car during its first year is approximately exponentially distributed with a mean of $150. To find the probability that a car required over $300 for maintenance during its first year, we can use the exponential distribution formula:
P(X > 300) = e-300/150 = 0.135
This means that there is a 13.5% probability that a car will require over $300 for maintenance during its first year.