Use the information in the table below.Total salesIndustry 1Firm 1$5.3mFirm 2$199,000Firm 3$2.6mFirm 4$850,000What is the Herfindahl index for Industry 1?

Which of the following is not crucial to the Harrod-Domar model?

a. population growth rate b. marginal propensity to save c. incremental capital-output ratio d. marginal propensity to consume e. all were crucial to the Harrod-Domar model

The fictional country of Alpetra increases the income tax rate so that tax revenues increase by $30 million. In response, consumption falls by $8 million. If GDP and government spending remains the same and Alpetra is a closed economy, what is the change in investment?

a. Investment increases by $8 million. b. Investment decreases by $8 million. c. Investment increases by $38 million. d. Investment decreases by $22 million.