A rectangular classroom is 9 feet wide. It is five times as long as it is wide. What is the perimeter of the classroom?

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.