#### Answer

$k < 7.5$ and $4 \leq k$

#### Work Step by Step

$10k<75$ and $4-k\leq0$
$10k<75$
$10k/10<75/10$
$k < 7.5$
$4-k\leq0$
$4-k+k\leq0+k$
$4 \leq k$

Published by
Prentice Hall

ISBN 10:
0133500403

ISBN 13:
978-0-13350-040-0

$k < 7.5$ and $4 \leq k$

$10k<75$ and $4-k\leq0$
$10k<75$
$10k/10<75/10$
$k < 7.5$
$4-k\leq0$
$4-k+k\leq0+k$
$4 \leq k$

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