64^2/3 divided by 32^2/5 simplified?

Which number line correctly shows 0.8 + 0.3?

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

Find the slope of the line that passes through the points (0, 0) and (-2, -3). 2/3 3/2 -3/2