How do I find the next four of the sequence?

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?