Suzie simplified the following expression. what mistake did she make? 2(3 + 9x) - 2x 6 + 9x - 2x 6 + 7x

Can you answer my question? will mark brainiest!

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

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.