Posted by tera on .
The cost, in millions of dollars to remove x% of pollution modeled by c=6000/2002x. A) what is the cost to remove 75% of the pollutant? B) what is the cost to remove 90 % of the pollutant ? C) what is the cost to remove 99 %of the pollutant?D) for what value is this eqaution undefined?

math 
Reiny,
just replace x by the percentage value
e.g. for 75% removal
cost = 6000/(2002(75))
= 120
do the same for the others
as to D) when is the denominator zero?
when 2002x = 0
for when x = 100
so mathematically you could never pay enough to remove 100% of the pollutants.
BTW, I don't see why the function was not reduced to c = 3000/(100x) ?
Did the text state it this way?