How can properties help me add whole numbers and decimal? give an example

What is the number 321,000,000 in scientific notation? also what is the number? ?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price