Afunction is created to represent the cost per person to attend the school dance what restrictions would bei function is created to represent the cost per person to attend the school dance or restrictions would be made to the domain

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

How many times larger is 9 × 10^8 than 3 × 10^-5? a. 3 × 10^13 b. 3 × 10^-40 c. 3 × 10^-13 d. 3 × 10^3

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