#### Answer

a.) 9.75 inches
b.) 10 days before

#### Work Step by Step

a.)
h=0.75d+4.5
h=0.75(7)+4.5
h=5.25+4.5
h=9.75 inches
b.)
h=0.75d+4.5
12=0.75d+4.5
0.75d=7.5
d=10 days before

Published by
Brooks Cole

ISBN 10:
0-53449-636-9

ISBN 13:
978-0-53449-636-4

a.) 9.75 inches
b.) 10 days before

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