Don carried a 2 oz bag containing some marbles weighing 9.4 oz each. jamie carried a 1 oz bag containing the same number of marbles weighing 11.2 oz each. let m represent the number of marbles each child carried.
which simplified expression represents the total weight don and jamie carried?

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above