Answer:
1) The car can travel 623.3 km with 85 liters of petrol.
2) The car owner has to pay $303.8.
Explanation:
1) The distance traveled with 85 L of petrol can be found as follows:

Hence, the car can travel around 623 km with 85 liters of petrol.
2) If the liter of petrol costs $2.25, then the amount of petrol that the car owner has to pay to travel a distance of 990 km is:

Therefore, the car owner has to pay $303.8.
I hope it helps you!