Algebra: A Combined Approach (4th Edition)

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

Chapter 4 - Section 4.4 - Systems of Linear Equations and Problem Solving - Exercise Set - Page 318: 10


s+c=2300 s-4c =0

Work Step by Step

Let's say s is his savings account and c is his checking account. The total amount of them is 2300 so let's add them together: s+c=2300 Now, Dominique has 4 times as much money in his savings account as his checking account. If there was 100 in his checking account, then there is 400 in his savings account because 4 x 100 = 400. So 4c=s, which simplifies to: s-4c =0 So our answer is: s+c=2300 s-4c =0
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