PLEASE HELP
Determine the Percent Change for each of the following. Express your answer as a percent rounded to one decimal point as needed.

A quantity increases from 15 to 20 % increase
The price of the textbook dropped from $3.12 to $2.66 % decrease
The cost of gasoline rose from $2.66 to $3.12 % increase

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