Which of the questions below can be answered using the sum
−12+10
? Check all that apply.

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%

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Steve had 48 chocolates but he decided to give 8 chocolats to each of his f coworkers. how many chocolates does steve have left