Which of the following is a quantity that could be represented by the number 2.404 x 10^6? . a. the population of iowa. b. the diameter (in meters) of an atom. c. the thickness (in meters) of a sheet of printer paper. d. the amount of money (in us dollars) in the average checking account.

When 2.404 x 10^6 is expressed in another form, the number is equal to 2,404,000.  The population of a place would possibly be around this number. It cannot be the diameter of an atom since the number is too large not the thickness of a paper. It is not a common case also that the money in a bank account is around this number. Answer is A.