What is -18833.8888 x 366372.84 equal?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

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%

X+y=-4 x-y=2 use elimination with adding and subtraction