average cost problem

[kittiecs]

average cost problem

the setup cost is $2500.00 +$3.00 per animal
I have taken the $2500.00 cost and added the $3.00 and then multiplied the number of animals to get the average cost and it doesn't appear to ocmeo ut correctly. Can someone tell me what step I am missing.
$2500.00+$3.00=$2503.00*10=25030.

 

[pka]

average cost problem
the setup cost is $2500.00 +$3.00 per animal
I have taken the $2500.00 cost and added the $3.00 and then multiplied the number of animals to get the average cost and it doesn't appear to ocmeo ut correctly. Can someone tell me what step I am missing.
$2500.00+$3.00=$2503.00*10=25030.

I don't know what you are missing.
But I know what we are missing: THE PROBLEM.
How exactly does the statement of the problem read?

 

[kittiecs]

the problem reads biologists want to set up a station to test animals.Suppose the costs for such a station are $2500.00 for set up costs & $3.00 to administer each test.

Write an expression that gives the total cost to test x animals
Find the average cost per animal for 10 animals, 100 animals, and 1000 animals.
Sorry I should have puti n all the information

 

[pka]

the problem reads biologists want to set up a station to test animals.Suppose the costs for such a station are $2500.00 for set up costs & $3.00 to administer each test. Write an expression that gives the total cost to test x animals
Find the average cost per animal for 10 animals, 100 animals, and 1000 animals.

Suppose n is the number of animals tested.

The cost function is C(n)=3n+2500.

Average cost is cost/number: AC(n)=C(n)/n.

 

[kittiecs]

I am sorry I am totally lost. Do i take the cost and multiply it by the number of animals.
Or do I take the cost and divide it by the number of animals. :?

 

[pka]

The cost for 10 is $2530.
The average cost is $253.

 

[kittiecs]

Thank you I really do appreciate your help. These word problems really have me stumped.