Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Section 8.6 - Further Graphing of Quadratic Functions - Exercise Set - Page 528: 88d

Answer

186.82 million metric tons

Work Step by Step

$2013-2000=13$ $f(x)=-.072x^2+1.93x+173.9$ $x=13$ $f(x)=-.072x^2+1.93x+173.9$ $f(13)=-.072*13^2+1.93*13+173.9$ $f(13)=-.072*169+1.93*13+173.9$ $f(13)=-.072*169+25.09+173.9$ $f(13)=-12.168+25.09+173.9$ $f(13)=-12.168+198.99$ $f(13)=186.822$ $f(13)=186.82$
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