Use multiplication to find 2 equivalent fraction for 3/4 and 4/5

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

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?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily