4. Rectangle PQRS with vertices P(-6, 9), Q(3,6), R(O, -9), and S(-9,-6): a) dilated by a scale factor of 1/3 with the origin as the center of dilation b)
reflection in the line y = -X

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Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

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?