How do I find x and y in special right triangles?

Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32

John read the first 114 pages of a novel, which was 3 pages less than 1/3 of the novel. write an equation to determine the total number of pages (p)(p) in the novel.

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.