Sam monte deposits $21,500 into legal bank which pays 6 percent interest that is compounded semiannually. what will sam have in his account at the end of 6 years?

Anyone know? will mark brainliest if correct!

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.