This week, Sarah spent a total of 120 minutes studying. This total was 20 more minutes than 4 times the amount of minutes she studied last week. How many
minutes did Sarah spend studying last week?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

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

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.