Step-by-step explanation:
For the point (5,8) to be a solution to the equations, when you insert x=5 and y=8 , they have to equal to the given values
substituting (5,8) into 4x+y
4(5)+8
=20+8
=28
substituting(5,8) into x-y=3
5-8
= -3
Answer:
8
first, 70-79 have 3 students
then 80-89 have 5 students
its going to be D (x,y) - (x-2,y-4)
I don't see the polygon but all you need to do is add up all the sides.
