if joe decides to start excercising and he begins to walk to school home everyday an he'll walk on weekends too, he will burn another 500 calories a day how many pounds can joe lose in 4 months? he is dropping 1000 calories per day x7 days per week and is losing 2 pounds per week.

Which system of linear inequalities is represented by the graph?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?