If Investment expenditures increase by $300B and MPC is equal to 0.90, what will be the increase in real GDP?

Physical needs include: a. the need for sleep b. the need to feel safe c. the need to feel secure d. all of the above

What information does a survey provide? a. an accurate description of the population surveyed b. whether there is a predictive relationship between two variables? c. whether there is a cause-and-effect relationship between two variables d. none

Select the correct answer. what was edwin hubble's contribution to the field of astronomy? a. he discovered variable stars. b. he proved that the heliocentric model accurately described our solar system. c. he found a relationship between the period luminosity and distance of stars. d. he proved that the universe is finite. e. he discovered that the universe was expanding.