Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 3 - Solving Inequalities - Pull it All Together - Page 221: Task 3

Answer

17 x 23 inches

Work Step by Step

$(12 + 2x)*2+(18 + 2x)*2 \leq 80$ $24 + 4x + 36 +4x \leq 80$ $60 + 8x \leq 80$ $60 + 8x - 60 \leq 80 - 60 $ $8x \leq 20$ $8x/ 8 \leq 20/8$ $x \leq 2.5$ $(12 + 2(2.5) = 12 + 5 = 17 $(18 + 2(2.5) = 18 + 5 = 23
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