Today’s low temperature of 50.7 f came just dawn. during the day, the temperature increased 23.9f. what was tuesday high temperature? show your work

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Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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%