What is the area of a rectangle with vertices at (2, 3), (7, 3), (7, 10), and (2, 10)?
a. 44 units2
b. 30 units2
c. 24 units2
d. 35 units2

Given:
x     y
2     3
7     3
7   10
2   10

It is easier to graph these vertices to avoid confusion. 

Length: basis is the y-values : 10 - 3 = 7 units
Width: basis is the x-values: 7-2 = 5 units

Area = Length * Width
A = 7 units * 5 units
A = 35 units²    Choice D.