Joe and Ed Go to a Diner That Sells Hamburgers

question 11

Multiple Choice

Joe and Ed go to a diner that sells hamburgers for $5 and hot dogs for $3. They agree to split the lunch bill evenly. Ed chooses a hot dog. The marginal cost to Joe then of ordering a hamburger instead of a hot dog is

• A) $1.
• B) $2.
• C) $2.50.
• D) $3.

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Definitions:

Pectinate Muscles

Internal ridges of myocardium in the right atrium and both auricles of the heart, which play a role in the contraction pattern of the heart chambers.

Interatrial Sulci

Grooves on the heart's surface that mark the boundary between the left and right atria.

Chordae Tendineae

Heart strings that connect the papillary muscles of the heart to the tricuspid and mitral valves, facilitating valve function.

Tricuspid Valve

A valve in the heart that lies between the right atrium and the right ventricle, preventing backflow of blood.