What links the decisions of consumers and firms in a market?

Which of the following shifts the demand for loanable funds curve leftward?

A) a fall in the real interest rate B) a rise in the real interest rate C) a decrease in the taxes paid by the business D) a decrease in the expected profit

Assume the total product of two workers is 110 and the total product of three workers is 120. The three worker's average product is ________ while the third worker's marginal product is ________.

A. 50; 10 B. 40; 10 C. 120; 110 D. 40; 20