Im so sorry but i am not into that:(
You would multiply both 2x and -8 by 5. The answer would be 10x-40.
We are given vertices of a rectangle (0, −4) , (−1, −3) , (2, 0) , and (3, −1).
Length is the distance between (0, −4) and (−1, −3) points.
Width is distance between (−1, −3) and (2, 0) points.
<u>Computing length:</u>



<u>Computing Width :</u>



<h3>
Area of the rectangle = Length × Width </h3>
=
.
We can see that
there are six sides
so, n=6
so, firstly we will find total angle
total angle =(n-2)*180
total angle =(6-2)*180
total angle =720
so, sum of all angles must be 720
so, we get

now, we can solve for x

.............Answer