The cougars football team started on the 30 yard line and fell back to the 19 yard line. what expression can be used to find the change in their position

Find the x coordinate of the point.

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?

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