# Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set - Page 19: 131

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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