The volume of a TV box needs to be 30,000 cubic centimeters. If the length is 10 less than four times the height and the width is 35 less than the height, what is the required height of the box?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field