The function is $\"\"$ , where $\"\"$ is number

of hours after taking the dose.

(a)

Graph the function $\"\"$ :

$\"\"$

(b)

Domain of a polynomial function is all real numbers.

The relevant domain represents the interval of time beginning

when the dose was first taken and ending when the pain reliever

left the blood stream.Because time cannot be negative, $\"\"$ .

The amount of pain reliever in the blood stream is zero when

the dose is first taken at $\"\"$ and is zero again at $\"\"$ ,

Therefore $\"\"$ .

Relevant domain of the function is $\"\"$ .

(c)

$\"\"$

Observe the graph of the function $\"\"$ :

The maximum value of the function is $\"\"$ .

Therefore, the maximum amount of pain reliever that entered the

blood stream is 346 milligrams.

(a)

Graph the function $\"\"$ :

$\"\"$

(b) Relevant domain of the function is $\"\"$ .

(c) The maximum amount of pain reliever that entered the blood

stream is 346 milligrams.