if there are 300 raffle tickets and one raffle ticket is drawn, the proabability of drawing the next one is 1 in 299 because there is one less ticket from the previous win
So the tens place for this number would be the 3 for "30." It wants 3 more in the tens place, so I think it wants you to add 3 tens to make it 60, or a grand total 5,865.87. It's worded a little funny, so if you think it's something else please tell!
The line of reflection is b
You can see it much easier if take away all the clutter. Redraw the diagram and take way a d and especially c.
You should be left with only line b and the two triangles. You can see it much easier if you do that. Then just look at the parallel lines of the triangles. They are right across from each other.
80% because I did the math