Four friends bought concretes from Fritz's. They had a coupon for $5.00 off their total order. After the discount was applied, the total cost for the concretes was $17.00.
Write an equation for the situation

Work shown please! :)

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?  

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3