Q:

Can someone please help me with this one? I’m very confused, how can you solve for the width if the problem doesn’t tell you what a and b are for the length? And after, can you tell me which letter it is? I just randomly guessed B, but idk if it’s correct and I need work to support my answer too. Whoever helps me first will get brainliest

Accepted Solution

A:
Answer: A. (2x-3)/2Step-by-step explanation:Performing the long division indicated by the perimeter expression, you find ... perimeter = (2x -3) + (10x +6)/(x^2 +2x)Comparing this to the formula for the perimeter ... perimeter = 2W +2Lwhere L is said to be of the form (ax +b)/(x^2 +2x)we can match terms in the perimeter expression to see that ... 2W = 2x -3 2L = (10x +6)/(x^2 +2x)The problem doesn't ask for it, but we can see that (a, b) = (5, 3). We can also see that ... W = (2x -3)/2 . . . . . . . matches choice A