Shana wants to use all 62 feet of the fencing she has to make a

Check boxes 3,4, and 5

Step-by-step explanation:

It is given in the problem that the equation to find the width of the run is 2l+2w=62 and l=20 feet

You can plug in 20 for l in the previous equation by using Substitution. It should look like this:

2(20)+2w=62

Next multiply 2 by 20 to get 40:

40+2w=62

Then subtract 40 from both sides: (Subtraction property of equality)

2w=22

Then divide 2 from w AND 22:

w=11

This means that the first box is INCORRECT as the width was calculated to be 11 not 10.

The width cannot be a negative number or 0