Question 1073053
The height of the box is 9", so the length x width of the box is 405/9, or 45. So:
x(x+4)=45
x²+4x-45=0
(x+9)(x-5)=0
x=5 or -9
The length is 5", and the width is 9". So the dimensions of the box are 5"x9"x9". ☺☺☺☺