Free points but pls answer this question

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.