find the measure of the sides of triangle DEF then classify it by its sides D(-2, 3), E(5, 5), F(-4, 10)

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?  

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply