Luis and Nina are playing games at the carnival to win tickets. Luis already has 5 tickets and is playing the ring toss game. Nina has no tickets and is playing the dart game. Luis wins 1 ticket every time he plays the ring toss game, and Nina wins 3 tickets every time she plays the dart game. If g represents the number of games played, and t represents the number of tickets had, for whom is the relationship between g and t additive?