Question

Sandy charges each family that she babysits a flat fee of 10$ for the night and an extra 5$ per child Kimmi charges 25$ per night no matter how many children a family has
A.Write a two step eqaution that would compare what the two girls charge and find when their fees are the same

B.How Many Children must a family have for sandy and kimmi to charge the same amount

C.the sanderson family has five children which babysitter should theychoose if they wish to save some money on babysitting and why

Answer 1

I am not going to answer each but here is a general answer.
y is total price and x is number of kids
Sandy's equation would be y= 10+5x
Kimmi's equation would be y= 25

For them to equal we would have 25=10+5x
Simplify 
5x=15
x=3
So for them to be equal, Sandy should have 3 kids.

So if someone has 5 children then he should choose Kimmi