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December 22, 2014

Homework Help: ALGEBRA 117

Posted by LOST on Saturday, August 13, 2011 at 3:24pm.

2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $1,400 for setup costs and $4.00 to administer each test.

a. Write an expression that gives the total cost to test x animals.

b. You can find the average cost per animal by dividing total costs by number of animals. Write the expression that gives the average cost per animal.

c. Find the average cost per animal for 10 animals, 100 animals, and 1,000 animals.

d. As the number of animals tested increases, what happens to the average cost to test the animals? Would the average cost ever fall below $4.00? If so, identify a value that supports your answer. If not, demonstrate or explain how you know.

e. How many animals should be tested for the average cost to be $6.00 per animal? (Work must be shown algebraically, not with trial and error or guess and check attempts.)

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