In a rectangle, the area is represented by the function A(x) = (x2 + x - 20)/(x - 1) and the length is represented by the function L(x) = (x-5)/(x-1). Which of the following functions gives the width of the rectangle? (Area = L*W).

Select one:
a. W(x) = x + 4
b. W(x) = x - 4
c. W(x) = x2 - 4
d. W(x) = x2 + 4

Question

In a rectangle, the area is represented by the function A(x) = (x2 + x - 20)/(x - 1) and the length is represented by the function L(x) = (x-5)/(x-1).  Which of the following functions gives the width of the rectangle?  (Area = L*W).

 

Select one:
a. W(x) = x + 4
b. W(x) = x - 4
c. W(x) = x2 - 4
d. W(x) = x2 + 4

1645323 · Answer

@phi @AccessDenied @whpalmer4

whpalmer4 · Answer

I'm suspicious that you've made an error in copying the problem...

1645323 · Answer

the answer choices?

whpalmer4 · Answer

no, the problem itself.    in particular, is it $x^2+x-20$ or $x^2-x-20$?

1645323 · Answer

no the problem is right on my worksheet, my teacher may have typed it in wrong

whpalmer4 · Answer

well, none of the answer choices you have provided when multiplied with the version of $L(x)$ you have provided will give you the value of $A(x)$ you have provided.  However, one of them will give you the value of $A(x)$ I suggested.

1645323 · Answer

i found that also