The Owner of a Luxury Motor Yacht That Sails Among

question 143

Multiple Choice

The owner of a luxury motor yacht that sails among the 4,000 Greek islands charges $600/person/day if exactly 20 people sign up for the cruise. However, if more than 20 people sign up (up to the maximum capacity of 90) for the cruise, then each fare is reduced by $5 for each additional passenger. Assume at least 20 people sign up for the cruise and let x denote the number of passengers above 20. Find a function R giving the revenue/day realized from the charter. ​

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Definitions:

Retina

A thin layer of tissue located at the back of the eye, containing cells sensitive to light that trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.

Ciliary Body

A structure in the eye that includes the ciliary muscle, which controls the shape of the lens, and the ciliary epithelium, which produces the aqueous humor.

Accommodation

The process by which the eye changes optical power to maintain a clear image (focus) on an object as its distance varies.

Nystagmus

Involuntary, rapid, and repetitive movement of the eyeballs, which can be horizontal, vertical, or rotary.