Isi makes sandwiches to sell at a football game.
The graph shows her costs and income from making and selling the sandwiches
Select the three statements that are true, based on the graph,

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not

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%

Can someone me with this? i’m not sure what to put for my equations.