Final answer:
Mary's annual premium for her car insurance would be $1,860, based on the given example where each of 100 drivers pays the same amount to cover the total cost of accidents.
Step-by-step explanation:
The student's question is about calculating the annual premium Mary would have to pay for her car insurance based on a simplified automobile insurance example. Based on the example provided, where a group of 100 drivers collectively pays a total of $186,000 in premiums to cover the costs of accidents, we can calculate that each of the drivers would pay a $1,860 premium annually. This is obtained by dividing the total cost by the number of drivers (186,000 / 100 = 1,860). Therefore, it follows that Mary's annual premium would also be $1,860.