Linear Applications
To many algebra students, applications (word problems) seem impossible to solve. You might be surprised how easy solving many of them really is. If you follow the program in this chapter, you will find yourself becoming a pro at solving word problems. Mastering the problems in this chapter will also train you to solve applied problems in science courses and in more advanced mathematics courses.
Percents
A percent is a decimal number in disguise. In fact, the word ‘‘percent’’ literally means ‘‘per hundred.’’ Remember that ‘‘per’’ means to divide, so 16% means 16 ÷ 100 or 16 = 100 = 0.16. Then 16% of 25 will be translated into (0.16)(25). (Remember that ‘‘of’’ means ‘‘multiply.’’) So, 16% of 25 is (0.16)(25) = 4.
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