Answer:
(12, 60)
Explanation:
(Burgers(x) to Price(y))
(x,y)
(50, 5) is wrong because 50 burgers do not cost 5.
50 would cost 250.
(70, 14) is wrong because 70 burgers do not cost 14.
70 would cost 350.
(13, 70) is wrong because 13 burgers do not cost 70.
13 would cost 65.
(12, 60) is correct because 12 burgers do cost 60.
Hope this helps! :]