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For the matrix N = [10 20 30; 40 50 60], which command will return a matrix with the elements 20 and 50?

For the vector X = [1 3 5 7 9], which command will return a vector with the elements 3 and 7?

Given the vector W = [10 20 30 40 50], which command will return the indices of elements greater than 25 and less than 45?

If you want to create a vector with 5 equally spaced points between 3 and 15, which command would you use?

The Human Capital approach:

If there is no pollution associated with an economic activity, social costs are:

The requirement that new cars be equipped with a catalytic converter in automobiles

MSC measures 

Which of the following can be used to estimate the non-use value (existence values, bequest values, etc.) of an environmental good or service?

If an electric company does not have to pay for its contribution to acid rain, then it will be producing: