The Cost of a Long-Distance Phone Call Is $0

question 136

Short Answer

The cost of a long-distance phone call is $0.39 for the first minute and $0.28 for each additional minute. If the total charge for a long-distance call is $4.03, how many minutes was the call? __________ minutes

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Definitions:

ACTH

Adrenocorticotropic Hormone, a peptide hormone produced by the pituitary gland that stimulates the production of cortisol by the adrenal glands.

Cortisol

Cortisol is a steroid hormone released by the adrenal glands, often in response to stress and low blood-glucose concentration.

Atrial Natriuretic Peptide

A hormone secreted by the heart's atria that regulates blood volume and pressure by reducing water, sodium, and adipose loads in the bloodstream.

Heart

A muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.