Answer:
both will advertise.
Step-by-step explanation:
Game theory looks at the interactions between participants in a competitive game and calculates the best choice for the player.
Dominant strategy is the best option for a player regardless of what the other player is playing.
Nash equilibrium is the best outcome for players where no player has an incentive to change their decisions.
The payoffs of advertising are either 5 or 15.
the payoffs of not advertising are either 10 or 2
the payoffs of advertising is higher than that of not advertising. Thus, the nash equilibrium is for the firms to advertise
Please find attached an image of the payoff matrix