Which answer shows 2.13786 times 10 Superscript 4 written in standard form? 0.000213786 2,137.86 21,378.6 2,137,860,000

1foot = 12 inches; 1 yard = 3 feet

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.

Alistair has 5 half-pounds chocalate bars. it takes 1 1/2 pounds of chocalate,broken into chunks, to make a batch of cookies. how many batches can alistair mke with chocalate he has on his hand?