If real GDP in a closed economy is $40 billion, consumption is $20 billion, and government purchases are $10 billion, what is investment?

Suppose a monopoly's inverse demand curve is P = 100 -Q, it produces a product with a constant marginal cost of 20, and it has no fixed costs

Compared to the consumer surplus if the market were perfectly competitive, consumer surplus is how much less when the monopolist practices perfect price discrimination? A) 3200 B) 1600 C) 800 D) 0

Consider the economic impact of Hurricane Florence in 2018. Which of the following statements is correct?

A. Spending toward reconstruction would lead to an increase in GDP. B. Increased government spending on relief efforts in the United States would decrease GDP. C. Damaged buildings and looting would lead to a decrease in GDP. D. U.S. well-being improves the more reconstruction efforts are needed, following the decline in GDP.