You are in awe by the world's first reinforced concrete skyscraper, The building is casting a 30-foot shadow. At the same time, you are casting a 1.5-foot shadow and you are 6
feet 3 inches tall. How tall is the Ingalls Building? Draw a picture... Show work!

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?