Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 23: 125

Answer

$97.4$

Work Step by Step

$A= 582$ $C=373$ $T=33$ $Y=4109$ $I=9$ $\text{Rating} = \dfrac{\left(250 \,\dfrac{C}{A} \right)+ \left(1000 \, \dfrac{T}{A} \right)+ \left(12.5 \, \dfrac{Y}{A} \right)+6.25 -\left(1250 \, \dfrac{I}{A}\right)}{3}$ $\text{ Rating } = \dfrac{\dfrac{250C+1000T+12.5Y-1250I}{A}+6.25}{3}$ $\text{Rating } = \dfrac{\dfrac{250\times 373 +1000 \times 33 + 12.5 \times 4109 -1250 \times 9}{582}+6.25}{3}$ $\text{Rating } \approx \dfrac{285.846+6.25}{3}$ $\text{ Rating } \approx 97.4$
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