(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A home security system costs $9/month in electricity costs (you may assume this is a fixed cost over the duration of the time involved in this question). A new security system costs $1500 to purchase and lasts for 8 years.

Determine a rational function that gives the annual cost of a security system as a function of the number of years you own the system. Using this function determine the average annual cost of the security system given above.

2. Relevant equations

n/a

3. The attempt at a solution

I got C(x)=(1500+108n)/n, where n is the number of years.

What would be the "average annual cost" of the security system given above?

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# Homework Help: Rational Function Application Question

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