The function is
.
represents the Cost in dollars for a day and
represents number of miles driven.
(a)
\Find the cost when number of miles driven is
.
Substitue
in the function
.

The cost
is
dollars.
(b)
\Find the number of miles when cost of renting moving truck
is
.
Substitute the value of
in the function
.

The number of miles
.
(c)
\Find the maximum no.of miles,when the cost
is no more than
then
.
Substitute
in the function
.

The maximun number of miles travelled is
miles.
(d)
\Find the implied domain of
.
The function is
where
number of miles travelled can never be negative.

Hence the implied domain of
is
or
.
(a) The cost
is
dollars.
(b) The number of miles
.
(c) The maximun number of miles travelled is
miles.
(d) The implied domain of
is
or
.