Math Problem. I was away and I am oblivious and freaking out please help. ;-;

Question

You have decided to look at a car that is listed for $12,000. After test driving the vehicle, you decide to purchase the vehicle. 

3. Sales tax for the vehicle is 13%. Including sales tax, what will be the final cost of the car? [2A]

4. You decide to finance the vehicle for 5 years, what will be your monthly payment of the vehicle before the interest you owe on the loan? [2A]

5. Add $35 to what your monthly payment is for interest purposes. After you do that, what is your final payment per month for the car? [2A]

6. In order to drive in Ontario, you must carry insurance on the vehicle you have. You found that a local insurance company would issue you a policy for $175 per month for your car. How much are you going to pay each month for the car and the insurance together? [2A]

7. Your car holds about 63 litres of gasoline when it is filled completely. Using the web or nearby gas station, check the current gas price for our location, then calculate how much it will cost to fill up the tank. [1A]

8. Let’s say you have to drive 15 km to work and 15 km back each day, Monday through Friday. How much will it cost you in gas each month to go to and from work? Say your car consumes 9.4 Litres for every 100 km. Round your answer to the nearest whole dollar. [3A]

Sorry its so long, I was away for the week and I am freaking out right now, I really need help, thank you.

Answer 1

12000(1.13) = $13,560 = after tax price