231 students went on a field trip 9 buses were filled and 15 students traveled in cars how many students were in each bus

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

With number 11 ( show how you got the answer)