Consider the graph below.
y
7
6
5
4
3-
2₁
1
(0,5)
BC (1,5)
-2-1 A 1
D (5,5)
E (5, 1)
F (5,0)
2 3 4 5 6 7
-1 (0, 0)
-2-
-x
What is the area, in square units, of
quadrilateral ABDE?
A 2.5
B 11.5
C 20
D 22.5
E Cannot be determined