The only way to answer this question is to know how many miles per gallon you get. Assume you have a vehicle that gets 25 miles per gallon, here the calculations:
If your mileage is more or less than 25 MPG, then you need to adjust your calculations based on actual MPG.
At 20 miles per gallon, it would take 9 gallons to travel 180 miles.
$300.15
84.4875
19 miles to the gallon means, that if you have one gallon of gas in vehicle, you can travel 19 miles before you run out of gas.if you have 2 gallons, you would be able to tavel 38 miles
$78.34
Not very much. Between $13.00-14.00.
If you drive 35-38 miles a month, and gas is $3.65 a gallon, then approx. $3.65. Seriously... monthly mileage will be needed to calculate this question.
You can travel to Las Vegas at any miles per gallon. And of course the amount of fuel you use in a Mini Cooper depends on your starting point which you did not list.
360 ÷ 12 = 30 gallons
It would cost (2.4) times (the cost of one gallon petrol). Also, add cost of tolls, food, etc.
1600 miles / 8 miles per gallon = 200 gallons. Multiply this by the cost of gasolene per gallon. Since the cost varies in different places and times, you will have to research this yourself for your particular situation.
The total cost would be 114.33. Since this is obviously a homework question - I've left out the method for finding the answer.