judgment upon human actions.
First find out how many things you can buy. $3.69 + $3.69 is $7.38. If you add one more item that is $3.69 that would be over $10, so you can only buy two things. If you take the price of your two items ($7.38) minus $10.00, what is your answer?
A rough draft to see where you story will go
How have the shelter's programs and efforts been affected by the lack of volunteers, because she is writing about the lack of volunteers.