How would I determine for x?
Do you know how to calculate area for a rectangle?
To be honest no, I havne't learned about it... My teacher said it was a trick question, and if we figured it out and explained it to him he would give us a prize.
\(\sf\Large Area = Length \times Width\)
They gave you \(\sf Area=72\\ Width = 9\\Length = 2x+4\)
the length... how would we determine the length?
area = length*width 72 = length*9 solve for length x is actually irrelevant in this question
So, first lets plug that into the formula and then see. :)
\(\sf\Large 72 = (2x+4) \times 9\)