PLZZ HELPP ILL GIVE BRAINLIST

Answer:
C- 8.33 cars/h
Step-by-step explanation:
We know she washed 50 cars during 6 hours. To know how many she did per 1 hour, we must do the following:
x represents the number of cars she washed per hour.
Now, solve it with Cross-multiplication.
Hope this helps!!