How do I simplify ((28 x 5Pi) x 15) + 140

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

What is 1/2 x (6 x 4)+3 + 2 show your work

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.