The manager of a band has kept track of the price of tickets and the attendance at the bands recent concerts. The equation y= -20.95 + 368.89 is a regression model for the attendance (y) as a function of the ticket price (x) in dollars. Interpret the parameters of the regression model in terms of the problem

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?

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Y= a(x-3)squared-1 what is the value of a