Find the absolute value of -18 18 -18 1/18 -1/18 find the opposite of -25 25 -25 1/25 -1/25

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Which statement about perfect cubes is true

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?