HI SOMEONE PLS HELP ME

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

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%