You get points so why not someone out

Ok so first you need is to identify all the factors of this equation.

The Rectangles Volume is the first you need to find.
9 feet x 16 feet x 4 in
9 x 16 x 4/12 which 4/12 can be converted to 1/3
V = 9 x 16 x 1/3
V = 48 feet cubed
1 yard = 27 feet cubed
48/27 = 1.78 yards cubed
Multiply 1.78 x 25 = $44.50