needed answer for this question asap

Two countries trade with each other and impose tariffs on the goods imported from the other country. Let x; for i = 1, 2 denote the tariff level of country i in percentage, the tariff levels being chosen simultaneously. The payoff to country i from the pair of tariffs (x;, x; ) is ui (xi , x; ) = a + bxi + cxix; - x, -dx; (i) Derive the best response functions of the two countries. (ii) Derive the Nash equilibrium of the tariff setting game. Maximum size for new files: 20MB, maximum attachments: 1 Files Accepted file types PDF document .pdf