Questions on Yosef's Astonishment

Questions

However, in understanding Yosef’s astonishment concerning the fact that Yaakov was still living, the following questions arise:

1. At that time, Yaakov was a mere 130 years old, an age considerably younger than those of his father and grandfather at the times when they passed on. Avraham passed away at 175 years old, and Yitzchak, at 180 years. Why was it so surprising that Yaakov was still alive?
2. By Yosef’s statement, “I am Yosef. Is my father still alive?” it implies that there is a connection between the first half of the sentence and the second. What is the connection between stating who he was, and (according to the above explanation) the amazement that his father was still living?
3. Why was this surprise that his father was still alive the first thing that Yosef expressed, immediately after he revealed his identity? (According to the explanation that holds that Yosef was indeed asking a question here and not merely expressing his surprise, it is understood why it was the first thing that he spoke of, as his father’s life was of paramount importance. In the case of the statement being one of astonishment however, why did it need to be the first thing that he expressed?)