Answer:
The expression 7x represents the height of the container.
Explanation:
From the question:
We are being informed that; if the length of the container is half of a foot longer than its width.
Let the width be x;
Then the length of the container can now be ; x+1/2
We all known that the volume of a rectangular prism is : V= l×w×h
here;
l = length
w = width
h = height
If we rewrite the given expression :
;
Then we factor we make a similar coefficient of the above equation, the remaining entities left in the parenthesis should be a linear term with a leading coefficient of 1 to match the expression for the length of the container.
i.e
![\mathbf{7x^3+3.5x^2}} \\ \\\mathbf{7x^2(x+1/2)} \\ \\\mathbf{7*x*x*(x+1/2)}](https://img.qammunity.org/2021/formulas/mathematics/high-school/iq6ngotxm79lc5iucvkg1amvrkt594a83z.png)
Hence, if the length of the container is half a foot longer than its width, x, then the expression 7x represents the height of the container.