well, just solve
160x/(100-x) = 240
160x = 24000 - 240x
400x = 24000
x = 60
the function 160x/100-x,models the cost,f(x), in millions of dollars,to remove x% of a river pollutants,if the government commits 240 million for this project, what percentage of pollutants can be removed?
1 answer