Algebra 1

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

Chapter 1 - Foundations for Algebra - Pull it All Together - Page 67: Task 1


\$13.50 per day

Work Step by Step

Looking at the table and using mental math, we see that the number of calories needed per day for each horse is 15,000. If h is the number of horses, the number of calories needed per day is $15000h$ calories. Find the number of calories needed per day for 6 horses by substituting 6 for h. Let d be the daily calories needed. $d=15,000(6)=90,000$ calories The daily cost is $0.15(d\div1000)$. The daily calories are divided by 1000 because the cost is given per 1000 calories. Substitute 90,000 calories for d to find the daily cost to feed 6 horses. Let t be the total daily cost. $t=0.15\times90000\div1000=0.15\times90=13.50$
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