Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set: 131

Answer

a. $26,317$ b. The formula overestimates the actual cost by $44 c. $29,099$

Work Step by Step

$T = 26x^2 + 819x + 15,527 $ a. 2010 is 10 yrs after 2000, x=10. $T(10) = 26(10)^2 + 819(10) + 15,527 = 26,317$ b. formula: 26,317 graph:26,273 $26,317-26,273=44$ c.2012 is 12 yrs after 2000, x=12. $T(12) = 26(12)^2 + 819(12) + 15,527 = 29,099$
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