A system of equations is shown below. Equation 1: 2 x − y = − 8 Equation 2: x + 2 y = 6 To begin solving the system of equations, Equation 1 is multiplied by a value of 2 to create Equation 3. Equation 3: 4 x − 2 y = − 16 Equation 2: x + 2 y = 6 Which procedure could best be used to eliminate one of the variables?

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