Please help me solve this

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%

Who long does it take to drive 150 miles at 45 miles per hour

Write the equation in general quadratic form: plz !