What slope equations would be used to go through these coins?

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

What is the upper quartile in the box plot?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%