A tire company finds the lifespan for one brand of its tires is normally distributed with a mean of 48,100 miles and a standard deviation of 2000 miles. If the manufacturer is willing to replace no more than 10% of the tires, what should be the approximate number of miles for a warranty

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walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

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20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

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