Help asap Around which line would the following cross-section need to be revolved to create a sphere?

circle on a coordinate plane with center at 1 on the x-axis and a radius of 1

y = x
y-axis
x = 1
y = 1

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.