The first is a. you can rewrite it

the second is d. the only common factor between 20 and 40 that can be taken out is the 4 which becomes a 2, but inside the square roots there is still a 5 and 10, which cannot be combined
the third is c.

the fourth is d.
add 3 to both sides

then square both sides

then divide both sides by 2, x=50
192 people should prefer Company B.
32+75+18=125
750/125=6
32*6=192
Answer:
I'm not very good with angles but I think the answer is AB