.Your roommate earns $100 and deposits it in her account at a bank.When your roommate earns $100 and deposits it in her account at a bank, it is saving because the money is not spent on consumption goods.d.You borrow $1,000 from a bank to buy a car to use in your pizza delivery business.When you borrow $1,000 from a bank to buy a car to use in your pizza-delivery business, it is investment because the car is a capital good.3.