Answer
$20$
Work Step by Step
Start with given expression: $8x-y,x=3,y=4$.
Substitute $3$ in for $x$ and $4$ in for $y$: $8(3)-4$.
Simplify for answer: $24-4=20$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set - Page 17: 4
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