Chapter 1.5, Problem 55E

To determine

(a)

The cost of removing the given percent of pollutants.

$y=\frac{6.7x}{100-x}$

To determine

(b)

Whether it is possible to remove all the pollutants.

S.No.	Percent Pollutant$(\%)$	Cost of removing pollutant $\left(\text{million}\text{dollar}\right)$
$1$	$50$	$6.7$
$2$	$70$	$15.63$
$3$	$80$	$26.8$
$4$	$90$	$60.3$
$5$	$95$	$127.3$
$6$	$98$	$328.3$
$7$	$99$	$663.3$

To determine

(c)

To sketch:

The graph of the given function.

$y=\frac{6.7x}{100-x}\mathrm{...}\left(1\right)$