Final answer:
Jan rented the car for 6 days.
Step-by-step explanation:
Let the unknown number of days that Jan rented the car be represented by x.
The total cost of the rental car can be calculated using the formula:
Total cost = (Daily rate * Number of days) + One-time fee
Given that the daily rate is $47 and the one-time fee is $65, the equation becomes:
347 = (47 * x) + 65
Subtracting 65 from both sides of the equation, we have:
282 = 47x
Dividing both sides of the equation by 47, we get:
x = 6
Therefore, Jan rented the car for 6 days, option a).