Dylan got his math test back and saw a -12 1/2 points on the top of his math test. the grade was 100% because he earned extra credit points. how much extra credit did dylan receive on his math test?

The parabola opens: y=√x-4 (principal square root) up down right left

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%

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?