If dairy farmers use automatic milking machines instead of milking by hand, which economic question does their decision answer?

In the long run, firms in monopolistic competition produce at a level that is ________ the efficient scale of output

A) less than B) equal to C) more than D) All of the above are possible depending on market conditions.

Investment demand is downward sloping because as the interest rate decreases,

A) each project's internal rate of return decreases. B) each project's internal rate of return increases. C) more projects will have an internal rate of return that exceeds the interest rate. D) more projects will have an internal rate of return that is less than the interest rate.