What is the slope of the line that passes through the points (-6, 1) and (4, -4)

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

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%