the cost, in millions of dollars to remove x% of pollution from a smokestack is expressed as:

Question

c=2300/135-1.35x
what is the cost to remove 70% and also 99%

Answer 1

Is it?

c = (2300/135)-1.35x

or

c = 2300/(135-1.35x)

Answer 2

c = 2300/(135-1.35x)