#### Answer

a.$-24$
b.$-3$

#### Work Step by Step

Follow the order of operations, "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction".
a.$-9+[(-4-1)-10] =-9+(-5-10)=-9-15=-24$
b.$5^{2}-20+[-11-(-3)] = 25-20-8=5-8=-3$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

a.$-24$
b.$-3$

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