You can try by plugging each ordered pair and seeing if the equation comes out true.
(5, 1)
2 * 5 - 1 = 9
That's correct so C is the correct answer.
2.47 + 7.1
7.1 + 2.47
9.57-7.1
9.57-2.47
Answer:X = 3
Step-by-step explanation:
Answer:
Step-by-step explanation:
here