Question

1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by
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 equation undefined?

e. Do the answers to sections a. through d. match your expectations? Explain why or why not.

Answer 1

It supposed to be modeled by c=6000/200-2x

Answer 2

replace x by the numbers
75
90
99
and see what you get

Answer 3

undefined for x = 100

Answer 4

clear or no?

Answer 5

Yes, it is thank you so much.