9. Suppose a country's net capital outflow does not change, but its investment declines by $420 billion. Its saving must have a. fallen by $420 billion, so its net exports have risen. b. fallen by $420 billion, but its net exports are unchanged. c. risen by $420 billion, so its net exports have fallen. d. risen by $420 billion, but its net exports are unchanged.

Which of the following businesses is most likely to disrupt an existing industry? a. closer connex developed an earphone that receives emails and text messages and converts them to voice messages. the first models had poor reception, but they rapidly improved over time. b. mega technologies reconfigured the components used in its touchscreen tablets to create a new type of wearable device for use in restaurants and other service industries. c. particle inc. developed a teleportation technology that can transport physical materials instantaneously across great distances. d. altrea added advanced camera technology to its premium line of smartphones so that they would take the highest-quality photos of all phones on the market.