What is the expanded form of this number? 509.307

(5×100)+(9×1)+(3×110)+(7×11,000)

(5×100)+(9×10)+(3×110)+(7×11,000)
(5×100)+(9×10)+(3×1100)+(7×11,000)< br />
(5×100)+(9×1)+(3×1100)+(7×11,000)

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

What is the ratio of the length of an object in yards to the length of the same object in miles?