The value of (4x10^7)(7x10^8) is closest to which of the following?  Pick.
A) 10^15  B) 10^12  C) 10^13  D) 10^14  E) 10^17
multiplying these we get,   28 x 10^7 x 10^8   = 2.8x 10^16   which is closer to 10^17   Answer: 10^17
<result>E</result>
The value of (4x10^7)(7x10^8) is closest to which of the following?