Cassius corporation has provided the following contribution format income statement. assume that the following information is within the relevant range. sales (7,000 units) $ 210,000 variable expenses 136,500 contribution margin 73,500 fixed expenses 67,200 net operating income $ 6,300 the number of units that must be sold to achieve a target profit of $31,500 is closest to:

Scientists developed the first successful human cell culture in vitro (grown in a lab) in the 1950s by removing cancer cells from a woman. this concept has allowed modern scientists to successfully grow organs. which of the following answers  bestdetermines why there was success?   neurons send a signal to the cell to multiply. a large blood supply to the cell allows enough nutrients for growth. cells are the basic unit of life and thus can regenerate if in a controlled environment. cells cannot reproduce on their own, and the scientist manipulates them to grow.