#### Answer

$x=10000$

#### Work Step by Step

If the number of sales a week is $x$, then the commission is $0.05x$
Then the equation is $300+0.05x=800\\0.05x=500\\x=10000$

Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$x=10000$

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