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Real World Applications Tabitha Floyd MAT126

# Real World Applications Tabitha Floyd MAT126

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Real World Applications Tabitha Floyd MAT126: Survey of Mathematical Methods Instructor: Kerri Dopart November 22 th , 2010

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Real World Applications In this paper I am going to demonstrate how to solve two problems that we might face on a normal day. The first way I am going to show you is how the text book shows us to handle this type of problem. The second way is if you did not have a book or anything to guide you how you would come up with an answer. A person hired a firm to build a CB radio tower. The firm charges \$100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is \$25more than the preceding 10 feet. That is, the next 10 feet will cost \$125; the next10 feet will cost \$150, etc. How much will it cost to build a 90-foot tower? What do we know? We know we will have nine terms because there is to be 90 feet of wire and the price changes at every ten feet. The sum of all of theses will be the total cost. Sn = (n/2)[2a+ (n-1)d] Sn= sum of n n= number of terms, which is 9.
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