What is x squared minus 68 = x - 18?

What is the distance between (–2 1/2,-3) and (1, –3)?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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%