10. A small office unit is to contain 100 ft2
of floor space. A simplified model is shown in the
figure.
(a) Use an equation to express the length y of the building in terms of the width x.

(b) If the walls cost $500 per running foot, use an equation to express the cost C of the
walls in terms of the width x. (Disregard the wall space above the doors and the thickness
of the walls.)

Question

10. A small office unit is to contain 100 ft2
of floor space. A simplified model is shown in the 
figure.
(a) Use an equation to express the length y of the building in terms of the width x.
  
(b) If the walls cost $500 per running foot, use an equation to express the cost C of the 
walls in terms of the width x. (Disregard the wall space above the doors and the thickness 
of the walls.)

anonymous · Answer

can you show work please?

anonymous · Answer

Okay we know the floor area of the office is 100 ft^2. The area is given by A=length*width

So let x=width and y=length
A=x*y 

We know that the area is 100 so,
100=xy

Now that you know the equation can you rewrite this so that y is in terms of x?

anonymous · Answer

where is the simplified figure mentioned in the question????

anonymous · Answer

do you need help rearranging this 100=xy?