Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 1 - Review - Page 90: 86

Answer

5n + 5.6

Work Step by Step

"twice" = 2* "sum of a number and 2.8" = n + 2.8 "added to" = + "3 times the number" = 3*n Therefore, "Twice the sum of a number and 2.8, added to 3 times the number" translates to 2*(n + 2.8) + 3*n. Simplify the expression: 2(n + 2.8) + 3n = 2(n) + 2(2.8) + 3n = 2n + 5.6 + 3n = 5n + 5.6
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