Answer:
C- 15 cars.
Step-by-step explanation:
To do this, you will need to set up an equation as follows:
8x+15=6x+45
Then you will subtract 6x from each side. Then you will have this:
2x+15=45
Then you will subtract 15 from each side, and then you will have:
2x=30
Then you will divide each side by 2 and you will get 15. Hope this helped!