Anna started a dog walking business. so far she has $117. she spent $45 dollars on supplies and charges $12 per hour. how many hours has she worked so far? *

If she spent 45 dollars on supplies, we need to add that to the total:

117 + 45
162

Now, lets divide by 12 to get the number of hours:

162/12
13.5 hours

If your question asks for a whole number, we have to say 13, because she didn't complete 14.

Hope this helps!