Ralph Wants to Buy Some Milk and a Box of Cereal

question 200

Multiple Choice

Ralph wants to buy some milk and a box of cereal. If Ralph buys 4 gallons of milk at $3.00 per gallon, the box of cereal costs $2.00. If he buys 5 gallons of milk, the box of cereal is free. For Ralph, the marginal cost of buying a fifth gallon of milk is:

• A) zero.
• B) $1.00.
• C) $2.00.
• D) $3.00.

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Definitions:

Dermatome

A specific area of skin that is innervated by sensory fibers from a single spinal nerve root.

Grafting

A horticultural technique whereby tissues from one plant are inserted into those of another so that the two sets of vascular tissues may join together, also used in surgery for transplanting skin or other tissues.

Sudoriferous Glands

Glands located in the dermis layer of the skin, responsible for producing and secreting sweat.

Perspiration

The process of sweating, where the body releases fluid through the sweat glands as a means of cooling down.