Answer:

Step-by-step explanation:
Given
See attachment
Required
The solution
The solution is at the point where the two lines meet.
The lines meet at:
and 
So, the solution is:

x and the 120 degrees are Complementary angles so they are the same. x=120˚
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104,229
Ten thousands place is the 0
9 = ones
2 = tens
2 = hundreds
4 = thousands
0 = ten thousands
1 = hundred thousands
You are asking for rounding to the ten thousands, if number before that is 5+, round up, if 4-, round down
100,000 is your answer
A 12,940 because he hasn't gone back to the top yet