There are about 31,500,000 seconds in a year ? Choose the best approximation of the number of seconds in a year

A) 3x10^6
B) 3x10^7

answer:     true

step-by-step explanation:

step-by-step explanation:

; fx

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies