A soccer coach is marking the lines for a soccer field on a large recreation field. The dimensions of the field are to be 90 yards by 56 yards. Describe a procedure she could use to confirm that the sides of the field meet at right angles.

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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?