Active trading in markets and competition among securities analysts ensure that: i. security prices approach informational efficiencyii. riskier securities are priced to offer higher potential returnsiii. investors are unlikely to be able to consistently find under or overvalued securitiesa. i onlyb. i and ii onlyc. ii and iii onlyd. i, ii, and iii

Salt corporation's contribution margin ratio is 78% and its fixed monthly expenses are $30,000. assume that the company's sales for may are expected to be $89,000. required: estimate the company's net operating income for may, assuming that the fixed monthly expenses do not change.

True or flase? a. new technological developments can us adapt to depleting sources of natural resources. b. research and development funds from the government to private industry never pay off for the country as a whole; they only increase the profits of rich corporations. c. in order for fledgling industries in poor nations to thrive, they must receive protection from foreign trade. d. countries with few natural resources will always be poor. e. as long as real gdp (gross domestic product) grows at a slower rate than the population, per capita real gdp increases.

What business practice contributed most to andrew carnegie’s ability to form a monopoly?