Massimo spent $90 riding the bus. each bus ride cost $2.50. write and solve an equation to determine how many times massimo rode the bus.

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm