8th grade math, please help.

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

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?