How many warnings do you need till you get banned or is it just random

Option 1: $30 an hour plus a nonrefundable deposit of $50 option 2: $20 an hour plus a nonrefundable deposit of $75 kyle is renting a jetski for the day. if he can rent the jetski in one hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal then option 1?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?