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Unformatted text preview: Example 3: Solve 2x + 2y = 6 by elimination 6x 2y = 14 Example 4: Solve x + y = 2 and classify 2x + y = 0 Example 5: Solve 5x + 6y = 1 and classify 10x + 12y = 2 Example 6: Solve 2x + 3y = 4 and classify 4x + 6y = 4 Applications: Example 1: A motorboat takes 5 hours to make a trip downstream with a current of 2 mph. The return trip takes 7 hours. Find the speed of the boat in still water. Example 2: A coffee shop charges $11 for Kenyan Roast Coffee and $10 for Folgers Coffee. How much of each type should be used to make a 20 pound blend that sells for $10.60 per pound? Example 3: The break even point is where the cost equals the revenue. Find the break even point if the cost is defined by C(x) = 10x + 450 and the revenue is defined by R(x) = 15x...
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This note was uploaded on 04/07/2008 for the course MATH 112 taught by Professor Taylor during the Spring '08 term at Alabama.
 Spring '08
 Taylor
 Equations

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