The intersection of two planes is a point. true or false

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?  

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Which of the following is the shape of a cross section of the figure shown below