Solve the problem.

Suppose a cost-benefit model is given by y = , where y is the cost for removing x percent of a given pollutant. What percent of pollutant can be removed for $25,000? Round your answer to the nearest tenth of a percent.
A) 111.8%
B) 90.5%
C) 9.0%
D) 487.4%

Question

Solve the problem.

Suppose a cost-benefit model is given by y = , where y is the cost for removing x percent of a given pollutant. What percent of pollutant can be removed for $25,000? Round your answer to the nearest tenth of a percent.
A) 111.8%
B) 90.5%
C) 9.0%
D) 487.4%

anonymous · Answer

$$y=\frac{ 2629x }{ 100-x }$$

anonymous · Answer

did you sub.s in y=25000 and solve for x?

anonymous · Answer

no the first y= didnt show up so its 2629 one

anonymous · Answer

sub.s in y=25000 and solve for x

let me know if you're having trouble with that.

anonymous · Answer

i dont understand

anonymous · Answer

which part?  putting y=25,000?
or solving for x?

anonymous · Answer

all. im sorry i have a really bad cold i just need step by step as how to do it

anonymous · Answer

put in 25,000 for y
multiply both sides by (100-x)
move all terms with 'x' to one side of the equation.
divide both sides of the equation by the coefficient on x

anonymous · Answer

k thank you i understand that

anonymous · Answer

x=90.5

anonymous · Answer

yes good:)

anonymous · Answer

: thank you i just needed  a refresher!