An Efficiency Study of the Morning Shift at a Certain $f ( x ) = - x ^ { 3 } + 7 x ^ { 2 } - 3 x$

question 14

Multiple Choice

An efficiency study of the morning shift at a certain factory indicates that an average worker arriving on the job at 7:00 A.M.will have assembled $f ( x ) = - x ^ { 3 } + 7 x ^ { 2 } - 3 x$ transistor radios x hours later.Approximately how many radios will the worker assemble between 9:00 and 9:30 A.M.?

• A)Approximately 7 radios
• B)Approximately 13 radios
• C)Approximately 14 radios
• D)Approximately 390 radios

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Definitions:

Revolving Loan

A type of credit that allows the borrower to withdraw, repay, and redraw funds repeatedly up to a certain credit limit.

Average Balance

A calculation used by financial institutions to determine the average amount of money in an account over a specific period, often used to calculate interest charges or eligibility for benefits.

Portfolio

A collection of investments held by an individual or institution.

Rate of Return

The upward or downward shift in an investment's value over a designated period, quantified as a percentage of its initial value.