The government uses the following methods to regulate pollution. which of these results in the most pollution reduction by the firms with the lowest cost of pollution reduction and the least pollution reduction by the firms with the highest reduction costs?

a. legal limits combined with fines and tradable permits
b. taxes and tradable permits
c. legal limits combined with fines, taxes, and tradable permits
d. legal limits combined with fines and taxes
e. legal limits combined with fines

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

Answer the discount rate

Ithink the answer is d

Answerbiological perspective