64 people take part in a survey about their favorite computer game 1/8 of the people choose Galactic Zone. and 1 3/4 times as many people choose Endless Quest. how many people chose Endless Quest?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

How do you find the area of a triangle

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?