Question

Shana wants to use all 62 feet of the fencing she has to make a rectangular run for her dog. She decides to make the length of the run 20 feet. She writes and solves the equation 2l + 2w = 62 to find the width of the run. Which statements are true of the solution?

Answer 1

the width of the fence is going to be 11

Answer 2

Answer:

"Answer are:

A false (w is 11)  

B false (it won't be a rectangle if there is no width - it'll be a line - but the equation would not work)  

C True (must be a positive number)  

D True (you put the value of l in to find w)  

E True (you deduct the lengths from 62 to find w)  

The value of w cannot be a negative number.  

Substitution is used to replace the variable l with a value of 20.  

2L + 2W = 62  

L + W = 31  

W = 31-L  

W = 31-20 = 11