If the MPC in an economy is 0.75, government could shift the aggregate demand curve leftward by $45 billion by Multiple Choice increasing taxes by $15 billion. reducing government expenditures by $9 billion. increasing taxes by $12 billion. reducing government expenditures by $45 billion.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.