Choose the correct formula to determine a trend percentage (a) the total income of the current year minus the total income from a base year.(b) net profit of the current year divided by net profit of a base year.(c) net profit of the current year divided by net profit of a base year. (d) an item from any year divided by the same item from a base year, multiplied by 100

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.