What is the equation with a slope of 0 that contains the points (8,-9)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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%

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?