What is percent of 800 and 900

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Change negative exponents to positive, then solve

Consider a= {x|x is alive} f={x|x is in france} m={x|x is a national monument} w{x|x is a woman}. which statements are true regarding elements of the given sets? check all that apply.