If the multiplier is 4 and real GDP increases by $520 billion, the increase in investment spending must have been

According to this Application, in the year 2075, the portion of GDP devoted to spending on Social Security, Medicare and Medicaid is expected to be

A) significantly less than the share of GDP devoted to these programs today. B) roughly equal to the total amount of GDP today. C) greater than the consumption spending component's share of GDP in 2075. D) larger than total federal spending's share of GDP today.

The table above describes the market for paper. The production of paper produces pollution. There are no external benefits. What amount of tax per ton of paper is necessary to produce the efficient quantity of paper?

A) $60 B) zero C) $40 D) $100