#### Answer

$\dfrac {10^{\frac {D}{100}}}{100}$

#### Work Step by Step

$D=200+100\log x\Rightarrow \log x=\dfrac {D-200}{100}=\dfrac {D}{100}-2\Rightarrow x=10^{\frac {D}{100}-2}=\dfrac {10^{\frac {D}{100}}}{100}$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$\dfrac {10^{\frac {D}{100}}}{100}$

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