Please help. I don’t know anything about this test.

This is fractions casey shared a pizza with some friends. they each ate 1 third of the pizza. how many people shared the pizza

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

X-intercept=-5 y-intercept=2 the equation of the line is