simplify: 2(-50)^0-2^-3 so i did 2(1)-2^-3 then 2+8= 10, did i do that problem correctly?

write the coefficient of the third degree term of the polynomial in the blank: 5x^4-8x^3-6x+16, does the 3rd degree mean the 3rd polynomial or the polynomial with the exponent of 3. I'm thinking it's the the first option, so the answer would be -6.

and lastly this word problem,

Write the numbers one million and one millionth in scientific notation. By what number must we multiply one millionth to get one million?

So i wrote 1,000,000 and 1 x 10^6. So is the answer 6? or just 1 maybe? :/

Thanks so much, i really appreciate the help.