Find the area of the trapezoid.
bı = 12. b2 = 6, h = 3
The area is
square units.

27

Step-by-step explanation:

A=((b1+b2)/2)h

A=((12+6)/2)(3)

A=((18)/2)3

A=27

The sample is from the right population, his customers. However, because he is surveying such a small number of people and only asking his best customers (who are probably the most satisfied, or they would not buy so much from him), the results are going to be biased, most likely positive, and not representative of his entire customer base.