American airlines spent over 6,651,297,000 on the direct maintenance of its planes. how would this number be written in verbal form? what would the cost of maintenance be if it were rounded all the way? if american rounded its maintenance cost to the nearest hundred million, what would it be?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?