Answer: Question 1 is A. C is wrong because without much notice would be informal. B is wrong because posting it on the newspaper it would be visible to everyone even people you don't know.
Question 2 The answer would be B because Madrid is the largest city in Spain. Answer A and C is wrong because both of them are true.
Question 3 the answer is B. Sorry I can't give an explanation I have to go. Let me know if these answers are correct.
Explanation:
Answer:abres is the answer
To find slope of two points the formula is y2-y1/x2–x1 so 5-3/2 - -6 or 2/8
The answer is 1/4 or 2/8
The answer tgat is incorrect is "No me gusta"
