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Cumulative Review - Inequalities










































suppose your office gives you $200 to buy printer paper. The packages of white paper cost $7 each. The packages of colored paper cost $8 each. write the inequality that describes how many packages of each type of paper you can buy

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Jan 13, 2012
Inequalities
by: Staff


Question:

suppose your office gives you $200 to buy printer paper. The packages of white paper cost $7 each. The packages of colored paper cost $8 each. write the inequality that describes how many packages of each type of paper you can buy


Answer:

Your office gives you $200 to buy printer paper.



The packages of white paper cost $7 each.

W = number of packages of White Paper purchased

The total cost of the packages of White Paper = 7*W


The packages of colored paper cost $8 each.

C = number of packages of Colored Paper purchased

The total cost of the packages of Colored Paper = 8*C


The inequality that describes how many packages of each type of paper you can buy:

(cost of the packages of White Paper) + (cost of the packages of Colored Paper) must be less than or equal to $200, and both W and C must be equal to or greater than zero.


7w + 8c ≤ 200

W ≥ 0

C ≥ 0


Since there are many different combinations for the purchases of White and Colored paper which meet this criteria, they can be best expressed in graphical form.




To see the solution represented graphically, open the following link.

The solution set is the area shaded in yellow, including the borders.

(1) If your browser is Firefox, click the following link to VIEW the solution; or if your browser is Chrome, Internet Explorer, Opera, or Safari (2A) highlight and copy the link, then (2B) paste the link into your browser Address bar & press enter:

(Use the Backspace key to return to this page.)

http://www.solving-math-problems.com/images/inequalities-cumulative-review-graph-01-2012-01-13.png


Thanks for writing.
Staff

www.solving-math-problems.com



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