Explain how to find the upper quartile of a box-and-whisker plot.
a) the upper quartile is the range of the upper half of the data.
b) the upper quartile is the mode of the upper half of the data.
c) the upper quartile is the median of the upper half of the data.
d) the upper quartile is the mean of the upper half of the data.

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before