How do i show 3 and all multilples of 3 in set builder notation?

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Jose bought 20 shares of netflix at the close price of $117.98. in a few years, jose sells all of his shares at $128.34. how much money did jose make? a.) $192.50 b.) $207.20 c.) $212.50 d.) $224.60

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5