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Suppose a cost-benefit model is given by 6.6x y= 100 - X where x is a number of percent and y is the cost, in thousands of dollars, of removing x percent of a given pollutant. Complete parts a through c. a. Find the cost of removing each percent of pollutants: 50%; 70%; 80%; 90%; 95%; 98%; 99%. 50% 0 70% y 10 80% VE 90% y 95% 98% y = 10 99% y = 10 (Type an integer or decimal rounded to two decimal places as needed.)