Answer:
A = 55
Step-by-step explanation:
take the two identical triangles and join them so that you get a rectangle wih sides 5 and 11. now multiply them togeter to get the are of the polynom
Yes because you can right and number the graph then color up to the number each person u survey
A(-5,5)
B(4,5)
C(2,0)
D(-5,-2)
AB,BC,CD,DA
AB = [4-(-5)),5-5]=[9,0]
Lenght

BC = [2-4,0-5]=[-2,-5]
Lenght

CD = [-5-2,-2-0]=[-7,-2]
Lenght

DA =[-5-(-5),-2-5]=[0,-7]
Lenght

sorted from longest to shortest:
AB, CD,DA,BC
It will be y=-1 as said on the paper or computer
Adults = x
Students = y = x + 40. 40 more student than adult
Adult = $8, Student = $6
Total for Adults = 8*x = 8x
<span>Total for students = 6*y = 6y
</span>
Total = $1920
8x + 6y = 1920
Hence system of equations are:
<span>y = x + 40
</span>
<span>8x + 6y = 1920</span>