-7. When you look at the graph it is divided into x and f(x). f(x) is the same as y so the question is basically asking you what is x when y is -3. So you just go to the -3 under f(x) and look over to find that the answer is -7
I think the answer is 2099/1000
N= night c= child
sandy= $10+$5c
kimmi= $25n
if sandy babysits 3 children for one night they will both be the same price
sandy= $10+5(3)=$25
kimmi= $25
