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Unformatted text preview: storm is given by s ( t ) = 42 t, the negative sign indicating that the storm is moving towards Austin. Thus at t = 5, s ‡ 5 · = 410 =6 . Consequently, since speed is always nonnegative, storm speed = 6 mph . keywords: instantaneous speed, derivative 017 (part 1 of 1) 10 points The cost function for Levi Strauss to produce x pairs of blue jeans is C ( x ) = 5000 + 5 x3 100 x 2 + 7 10000 x 3 . ±ind the marginal cost to Levi Strauss of producing 100 pairs of blue jeans. 1. marginal cost = $18 per pair 2. marginal cost = $19 per pair 3. marginal cost = $16 per pair 4. marginal cost = $20 per pair correct 5. marginal cost = $17 per pair Explanation: By de²nition, the Marginal cost is the derivative, C ( x ), of the cost function C ( x ). Now C ( x ) = 53 50 x + 21 10000 x 2 ....
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This note was uploaded on 02/14/2012 for the course MATH 408 K taught by Professor Clark,c.w./hoy,r.r during the Spring '08 term at University of Texas.
 Spring '08
 CLARK,C.W./HOY,R.R

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