The perimeter of a rectangle is 80 feet. Find the dimensions if the length is 5 feet longer than four times the width.

Then find the area of the rectangle.

The area of a rectangle is 54x^9y^8 square yards. if the length of the rectangle is 6x^3y^4 yards, which expression represents the width of the rectangle in yards

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6

The surface area of the triangular prism is .