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Algebraic Expressions

Algebraic Expressions

Constants Exercises

Example 1

Mortimer Poindexter spends two hours every day running away from bullies. Some of the bullies he encounters are faster than others; therefore, he sometimes needs to run faster than at other times, but he is always chased for exactly two hours. (These bullies stick to a very rigid schedule.) Let s be the speed Mortimer runs (in miles per hour) and let d be the distance he travels (in miles) as he tries to make his escape. Is s a constant or a variable?

Example 2

Mortimer Poindexter spends two hours every day running away from bullies. Some of the bullies he encounters are faster than others; therefore, he sometimes needs to run faster than at other times, but he is always chased for exactly two hours. (These bullies stick to a very rigid schedule.) Let s be the speed Mortimer runs (in miles per hour) and let d be the distance he travels (in miles) as he tries to make his escape. Is d a constant or a variable?

Example 3

Mortimer Poindexter spends two hours every day running away from bullies. Some of the bullies he encounters are faster than others; therefore, he sometimes needs to run faster than at other times, but he is always chased for exactly two hours. (These bullies stick to a very rigid schedule.) Let s be the speed Mortimer runs (in miles per hour) and let d be the distance he travels (in miles) as he tries to make his escape. Express in symbols the relationship between d and s.

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