The graph of an equation with a negative discriminant always has which characteristics? A) It either opens up with the vertex above the x-axis or open down with the vertex below the x-axis.
B) It has no maximum value.
C) It either opens up with the vertex below the x-axis or open down with the vertex above the x-axis.
D) It has no minimum value.

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