Multiple Choice
Solve the problem.
-An industrial plant located in the center of a small town emits particulate matter into the atmosphere. Suppose the concentration of particulate matter in parts per million at a point d miles from the plant is given by
C = 120 - 15d2. If the boundaries of the town form a rectangle four miles long and six miles wide, what is the
Average concentration of particulate matter throughout the city? Express C as a function of x and y, set up a
Double integral, and evaluate.
A)
B)
C)
D)
Correct Answer:

Verified
Correct Answer:
Verified
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