Chapter 3.6, Problem 25E

Work these problems. (See Example 2.)

Pollution Control Suppose a cost-benefit model is given by

$f\left(x\right)=\frac{4.3x}{100-x},$

where $f\left(x\right)$ is the cost, in thousands of dollars, of removing x percent of a given pollutant. Find the cost of removing each of the given percentages of pollutants.

50%

70%

80%

90%

95%

98%

99%

Is it possible, according to this model, to remove all the pollutant?

Graph the function.