What’s the answer?!!

Of four points are collinear, they are also coplanar

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%

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14