I don't understand this, but the table is used for questions 7-9. Thank you!

questions 7-9 Your Rival Advertise Do Not You Advertise Advertise (15, 15) Do Not (19, 12) Advertise (17, 14) (20, 12) The matrix above represents a one-shot game Your payoff is the first number ses (for example (10. 3). Your rival's payoff is the second number (for example: (10. 3)). Please answe Question 7 Not yet answered Points out of 1.00 Flag question Your dominant strategy is to: Select one: a. Advertise. Ob. Don't advertise. Oc You don't have a dominant strategy Od. None of the above Question 8 Not yet answered Points Out of 1.00 The Nash equilibrium is; Select one: (20.12) OF 17.14 Of (15.15) Dd. (19.12) Points out of 1 00 Flag question Question 9 Nother answered Your rival's dominant strategy is to Select one a. Advertise Ob. Don't advertise Do Both A and B Ood None of the above