Wilson cuts rectangular mats for picture frames. The area of the mat before it is cut is represented by the function MX) = 4.5x^2 + 17x + 16. The area that is cut out and removed from the middle of the mat is represented by the function
MX) = x^2 + 6x.
If x is the width of the portion of the mat that is cut out, which function best describes A(x), the area of the cut mat?
A. A(x) = 4.4x^2 + 17x + 10
B. A(X) = 4.5x^2 + 16x + 10
C. A(x) = 3.5x^2 + 11x + 16
D. A(X) = 5.5x^2 + 23x + 16