Kevin is watching his hamster run and notices that the wheel makes 12 revolutions before the hamster stops running. if the radius of the wheel is 3.5 inches estimate for kevin's hamster ran

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Could somebody me with this radical simplification?

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?