What is 4.12 expressed as an improper fraction in simplest form

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Shared decision making is always a positive strategy to take

Simplify the algebraic expression 8y-2(y+4)