Larry spent a total of $\$64.24$ on four books. If each book cost the same amount, how many dollars did each book cost? Express your answer as a decimal.

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