Given
P
=
f
(
x
)
\displaystyle {P}={f{{\left({x}\right)}}}
P
=
f
(
x
)
where
P
\displaystyle {P}
P
is the profit in thousand of dollars and
x
\displaystyle {x}
x
is the number of units sold, which of the following is the best interpretation of
f
−
1
(
\displaystyle {{f}^{{-{{1}}}}{(}}
f
−
1
(
7.5
)
=
\displaystyle {)}=
)
=
810?
If the company has a profit of $7,500, they will have sold 810 units.
If the company has a profit of $750, they will have sold 810 units.
It will cost $7,500 to make 810 units.
If the company has a profit of $810,000, they will have sold 7.5 units.
If the company has a profit of $810, they will have sold 7.5 units.
It will cost $7.5 to make 810 units.
If the company has a profit of $7.5, they will have sold 810 units.
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