the length of which can be represented by the expression (4x – 1) feet. The width of this space is 3 times the length.

Question

I need to write an expression for the width and the area of the rectangle

 

Answer 1

Assuming that the space in question is a rectangle:

 

If the length = (4x - 1), then the width = 3(4x - 1) = 12x - 3

 

We know area = length x width, so we have:

 

area = (4x - 1)(12x - 3)

 

If you are asked to do so, you can expand this binomial expression by using FOIL