What is the effect on real GDP of a $175 billion change in planned investment if the MPC is 0.50? $ nothing billion. (Enter your response rounded to the nearest whole number.)

Which of the following best explains why online retail companies have an advantage over regular stores? a. their employees make less money because they mostly perform unskilled tasks. b. they are able to keep distribution costs low by negotiating deals with shipping companies. c. their transactions require expensive state-of-the-art technological devices. d. they have a larger number of potential customers because people anywhere can buy from them.