Linda has $2.10 worth of change in nickels and dimes. if she has 5 times as many nickels as dimes , how many of each type of coin does she have?

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%