Answer:


I'm not sure what type of equations you are looking for but these are the most basic ones.
Step-by-step explanation:
Hope this helps! if you have any questions ask me in the comments.
Answer:
$0.085 per mile or 8.5 cent per mile
Step-by-step explanation:
We know:
Total expenses = $1837
Gasoline expense = Total expenses - other expenses
= 1837 - 972 - 114 - 105 = $646
Benito drove in total of: 7600 miles
Cost of gasoline per mile = Money spent for gasoline / total miles
= $646 / 7600
= $0.085 per mile or 8.5 cent per mile
Hope this helped :3
For this question you want to take 83 and subtract 56 which would give you 27. So 33 couldn't be the number of cows still in the barn.