3.07 × 10^-4 written in standard form

here are the choices

a. 0.00307

b. 0.000307

c. 30,700

d. 300,700

The number of electoral votes each state is assigned is determined by the size of its population every ten years. the chart shows the number of electoral votes california was assigned each decade of the past century. what is the 3rd quartile of the data?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?