computer per day.

$($a$)$ Develop a model for the total cost $(C)$ to put on the seminar. Let $x$ represent the number of students who enroll in the seminar.

$C=$

$($b$)$ Develop a model for the total profit $(P)$ if $x$ students enroll in the seminar.

$P=$

$($c$)$ Micromedia has forecast an enrollment of $45$ students for the seminar. How much profit will be earned if their forecast is accurate?

$P(45)=$$

$($d$)$ Compute the break$-$even point.

$x=$

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