Answer:
Option 4 : 
Step-by-step explanation:
<u>See the attached figure:</u>
To find the vertices of the feasible region, we need to graph the constraints, then find the area included by them, then calculate the vertices which is the intersection between each two of them.
As shown, the shaded area represents the solution of the constraints
So, the vertices of the feasible region are:

Answer:
A
Step-by-step explanation:
X=5
because 3 goes into 12 4 times and 20 divided by 4 equals 5
Two-hundred and forty-nine is less than two hundred and seventy-one