Tariffs refer to
a refusal to purchase or exchange products or services with another nation unless certain financial or ideological requirements have been satisfied.
government taxes on products or services entering a country that primarily serve to raise prices on imports.
government payments to companies or industries that primarily serve to create competitive advantage for domestic products.
a minimum requirement for the purchase between two or more nations of products or services.
a restriction placed on the amount of a product allowed to enter or leave a country.

Suppose life expectancy in years (l) is a function of two inputs, health expenditures (h) and nutrition expenditures (n) in hundreds of dollars per year. the production function is upper l equals ch superscript 0.40 baseline upper n superscript 0.60l=ch0.40n0.60. beginning with c = 1, a health input of $400400 per year (hequals=44) and a nutrition input of $400400 per year (nequals=44), show that the marginal product of health expenditures and the marginal product of nutrition expenditures are both decreasing. the marginal product of health expenditures when h goes from 44 to 55 is nothing, and the marginal product of health when h goes from 66 to 77 is nothing. (round your answers to three decimal places.)