Posted by lindsey on Sunday, May 1, 2011 at 12:57pm.
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 $3,000 for setup costs and $4.00 to administer each test.
a. Write an expression that gives the cost(C) to test animals.
b. you can find the average cost per animal by dividing total costs by number of animals. Write the equation that gives the average cost (AC) per animal.
c. Find the average cost for 20 animals.
d. Find the average cost for 200 animals.
e. Find the average cost for 2000 animals.
f. How many animals should be tested for the average cost to be $5.00 per animal?

math  Henry, Monday, May 2, 2011 at 10:57pm
a. C = 4X + 3000.
b. AC = (4X + 3000) / X.
c. AC = (4*20 + 3000) / 20 = $154.
d.
e.
f. AC = (4X + 3000) / X = $5.00,
Multiply both sides by x:
4X + 3000 = 5X,
5X  4X = 3000,
X = 3000 Animals.
Answer This Question
Related Questions
 Algebra  Biologists want to set up a station to test alligators in the lake for...
 Algebra 2  2. Biologists want to set up a station to test alligators in the ...
 algebra  2. Biologists want to set up a station to test alligators in the lake ...
 Algebra  Biologists want to set up a station to test alligators in the lake ...
 Math 117  2. Biologists want to set up a station to test alligators in the lake...
 Algebra  2. Biologists want to set up a station to test alligators in the lake ...
 Algebra  Biologists want to set up a station to test alligators in the lake for...
 ALGEBRA 117  2. Biologists want to set up a station to test alligators in the ...
 Algebra  Biologists want to set up a station to test alligators in the lake for...
 math  Biologists want to st up a station to test alligators in a lake for west ...
More Related Questions