IMathAS-libretexts

Suppose that the cost for manufacturing $\displaystyle {n}$ desks is $\displaystyle {C}$ dollars, so we have $\displaystyle {C}={f{{\left({n}\right)}}}$ . Which of the following statements is the best interpretation of $\displaystyle {f{{\left({n}+{7}\right)}}}$ ?

The number of desks has increased by 7.
The cost, in dollars, of manufacturing an additional 7 more desks.
The cost, in dollars, of manufacturing an additional 7 less desks.
The cost for manufacturing $\displaystyle {n}$ desks has been increased by $7 dollars.
The cost for manufacturing $\displaystyle {n}$ desks has been decreased by $7 dollars.
The cost, in dollars, for manufacturing $\displaystyle {n}+{7}$ desks.

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