Answer:
25
Step-by-step explanation:
b the shapes are rectangele and triangele
c triangle base times hieght divided by 2 rectangele leingth times width
d rectangle- 3*5= 15
triangle 4*5=20 20/2=10
10+15=25
Add up your values and divide by the number of cities. So......-32/4 = -8
BDE are the three that are linear and give a straight line when graphed. The others do not. There's a whole mixture of things in the other answers. They are plotted for you here.
The red one is a hyperbola
The blue one is a parabola about the y axis
The green one is a parabola