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Expert: Sherry Wallin - 9/30/2010


Question
A real life example of a polynomial function

Answer
dianalaura~

A cost, revenue, and profit function would amply satisfy this question. Let P(x) be the profit function and R(x) the revenue function and C(x) the cost function. There is a relationship between all of these and that is P(x) = R(x) - C(x) and hopefully this a positive number.

Suppose C(x) = 5 + 2x and R(x) = 8x then P(x) = 8x - (5 + 2x) = 6x - 5 which is positive as long as 6x - 5 >= 0, i.e., 6x >= 5 -> x >= 5/6.

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Sherry Wallin

Expertise

I can answer most questions up through Calculus and some in Number Theory and Abstract Algebra.

Experience

I have had my Bachelor's Degree since 1987 and have been a teacher since 1988. I earned my Masters Degree in Mathematics May 2010. I have been teaching at the same community college since 2002.

Education/Credentials
I have taught 12 years at the community college level, medical college, and technical college as well as a high school instructor and alternative education instructor and charter school instructor.

Awards and Honors
Master's GPA 3.56 Bachelor's GPA 3.34 Post grad work not degree related GPA 4.0

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