A researcher wants to express the middle of a distribution of numbers, such that half the cases are higher and half lower than a value. What statistical measure should he use

How many lines can be drawn through points j and k? 0 1 2 3

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 is the slope of the line shown below?