Explain the difference between saving and investment as defined by a macro economist. Which of the
following situations represent investment and which represent saving? Explain.
a. Your family takes out a mortgage and buys a new
house.
b. You use your $\$$200 paycheck to buy stock in AT&T.
c. Your roommate earns $\$$100 and deposits it in his
account at a bank.
d. You borrow $\$$1,000 from a bank to buy a car to use
in your pizza delivery business.