X movie seats are randomized, what are the chances 2 specific people sit next to each other.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62

Type the next three numbers in a sequence 80, 90, 85, 95, 90, 100, 95, 105