A rotation of 270 degrees follows which notation? (x, y) -> (x, -y)

(x, y) -> (y, x)

(x, y) -> (-x, y)

(x, y) -> (y, -x)

(x, y) -> (-x, -y)

(x, y) -> (-y, x)

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?

The graph of y=x3 is transformed as shown in the graph below. which equation represents the transformed function?

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices