If a = b, then a - c = b - c. this is the property of equality.

What is the equation of the graph below? y=sec(x)-4

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?  

What percent of the circle below is shaded?