Lets say the number is 155:
100 + 50 + 5
one hundred and fifty-five
155
idk the last one tho
there should be only 3 ways, plz double check
28 minutes
45 - 11 divided by 2 = 17 + 11 = 28 minutesa
You cannot simplify this but you can factorise it:
9x^6 (x^2 - 2)