If 1+9+8=1, what is 2+8+9?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

What is the next number in this series?

4,12,84,3612....

I am quite hot but become too cold if you remove the first two letters. What am I?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

Can you find the 09 errors in the picture below?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?