Help lol.

Which table below does not represent a function?

An object in geometry with no width, length or height is a(n):

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8