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Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Find the domain of the following expression: 1/(√x)-2

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%