Intermediate Algebra (11th edition)

(Marvins-Underground-K-12) #1
34.Clark’s rule, a formula used in reducing drug dosage according to weight from the rec-
ommended adult dosage to a child dosage, is

Find a child’s dosage if the child weighs 55 lb and the recommended adult dosage is 120 mg.
35.Since 1975, the number of daily newspapers in the United
States has steadily declined, as shown in the table.
(a)By how many did the number of daily newspapers
decrease between 1975 and 2008?
(b)By what percentdid the number of daily newspapers
decrease from 1975 to 2008? Round to the nearest tenth.

weight of child in pounds
150

*adult dose=child’s dose.

134 CHAPTER 2 Linear Equations, Inequalities, and Applications


Number of Daily
Year Newspapers
1975 1756
1980 1745
1985 1676
1990 1611
1995 1533
2000 1480
2005 1452
2006 1437
2007 1422
2008 1408
Source:Editorial & Publisher
Co.
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