College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Chapter P Review - Exercises - Page 76: 1


(a) $T=250-2x$ (b) 190 tablets (c) 125 days

Work Step by Step

(a) She starts with 250 tablets and takes 2 per day, so after $x$ days, the amount of tablets $T$ left would be: $T=250-2x$ (b) Using the formula with $x=30$, we get: $T=250-2*(30)=190$ tablets (c) We set $T=0$ and solve for $x$: $T=250-2x=0$ $250=2x$ $x=125$ So she will run out of tablets after 125 days.
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