What is the answer to a-15=4a-3

Which is a graph of a proportional relationship?

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%

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual