5.1 Looking for Employment - B

Multiple Choice

Josephine is looking for a new part-time job as a plumber. She responds to an ad for a position that pays $44.5K. What would her weekly salary be to the nearest cent if she gets this job?

• $855.77
• $855.79
• $855.78
• $855.76

Financial Algebra Second Edition

Slide 2

5-1 Looking for Employment

Learning Goals

The students will able to:

• Compute periodic salary based on annual contract salary.
• Interpret abbreviations in classified ads.
• Express classified ad prices as piecewise functions.

Financial Algebra Second Edition

Slide 3

Example 5: Jane’s Printing Services charges $29.95 to print 200 high-quality business cards. Each additional set of 100 cards costs an additional $14. Express the cost, 𝑟(𝑥), of printing 𝑥 sets of 100 cards as a piecewise function.

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Financial Algebra Second Edition

Slide 3

Example 5: Jane’s Printing Services charges $29.95 to print 200 high-quality business cards. Each additional set of 100 cards costs an additional $14. Express the cost, 𝑟(𝑥), of printing 𝑥 sets of 100 cards as a piecewise function.

Solution
The printing service charges for multiples of 100 cards only. If you think in sets of 100 copies,

200 copies represent two sets.

Split the function into rules for the two different domains.

Multiple Choice

An online bargain print service charges $19.99 for the first 200 business cards and $14.95 for each set of 100 above the first 200. Express the cost of the cards algebraically as a piecewise function.

Financial Algebra Second Edition

Practice: To turn in today by the end of the class period.

Textbook:
Applications at the end of section 5.1
Exercises # 3, 5, 7, 11 – just odd numbers.
(for exercise #7 change $420 to $42)

Remember to show all of your correct work in order to receive full credit.


HW:

Study for quiz on Thursday