Write the equation of the quadratic whose Vertex is at ( −4,−5) and passes through the point (−3, −7) Need answer very soon!

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

If you answer 2+2 you will get over 80 points

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%