Show work please ! :)

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

Which value would be a solution for x in the inequality 47-4x< 7

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?