What is 829 rounded to the nearest ten

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?