I need Help please! I am on a math quiz and am stuck

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)