The​ least-squares regression equation is y=629.7x+17,229 where y is the median income and x is the percentage of 25 years and older with at least a​ bachelor's degree in the region. The scatter diagram indicates a linear relation between the two variables with a correlation coefficient of 0.7136. Complete parts​ (a) through​ (d).

What is the distance between (–2 1/2,-3) and (1, –3)?

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

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?