2.5:3.5 simplified ratio

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.