Answer
$7493$
Work Step by Step
Simplify to obtain:
\begin{align*}
(7\times10^3)+(4\times10^2)+(9\times 10^1)+(3 \times 1)\\
&=(7\times1000)+(4\times 100) + (9\times10)+3\\
&=7000+400+90+3\\
&=7493
\end{align*}
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 4 - Number Representation and Calculation - Chapter 4 Test - Page 246: 4
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