If Students' Expenditures on Airline Travel Increase as a Consequence

question 258

Multiple Choice

If students' expenditures on airline travel increase as a consequence of more heavily discounted fares, students' demand for airline travel must be

• A) income elastic.
• B) income inelastic.
• C) price elastic.
• D) price inelastic.

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Definitions:

Cell-mediated Immunity

A branch of the immune response that involves the activation of T-cells to fight off intracellular pathogens and cancer cells.

Cytotoxic T Cells

Immune cells that kill cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.

B Cells

A type of white blood cell that plays a vital role in the immune response by producing antibodies to fight off infections.

Macrophages

Large phagocytic cells found in essentially all tissues, responsible for consuming pathogens and dead or damaged cells.