Answer:
The height of the container is

Explanation:
Let
L ------> the length of the rectangular container
W ----> the width of the rectangular container
H ---> the height of the rectangular container
we know that
The volume of the rectangular container is
------> equation A
we have



substitute the values in the equation A

Factor the term x in the left side

Simplify

Factor the term 7x in the left side

Simplify

Rewrite
