Answer:
El gas natural llegó ayer a Mallorca a través del gasoducto submarino.
1 base. The triangular pyramid has 1 base, and that is the square at the bottom. Hope this helps.
Answer:

Step-by-step explanation:
Know that: 
Starting for (0,0) count how many times you go up to the marked line (which is 2)

The [+] 2 is where you would start off at on the graph, with 1/2 being the slope go up one and over two.
The second and third one are correct