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Unformatted text preview: MATH 1331 Spring 2006 FINAL EXAM PRACTICE Directions: Use this as a practice exam. Set aside 2-3 hours in a quiet place, not in front of the tv or listening to the radio. Pretend that it is an actual testing environment. Take this test without looking at notes. 1. A shoe company collects the following data, where x is output in thousands of pairs of shoes, and y is the cost in thousands of dollars. x 4.5 7 10 15 20 25 50 y 2.8 2.9 3.1 3.6 4.5 5.2 9.5 (a) Use quadratic regression to model y as a function of x , i.e., y = C ( x ). (b) What is the cost when the output is 30,000 shoes? (c) What is the marginal cost when x = 19 and interpret? 2. A company manufactures and sells x TV sets per month. The monthly cost is C ( x ) = 72000+60 x, and the price demand equation is p ( x ) = 200- x 30 with 0 ≤ x ≤ 2500 . (a) What is the production level that will realize the maximum profit? (b) What is the maximum profit?...
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This note was uploaded on 04/21/2008 for the course MATH 1331 taught by Professor Imnotsure during the Spring '06 term at Texas Tech.
- Spring '06