The equation m(t) = 12 - 0.2t^2 models the mass of undissolved table salt in a glass of water, the m(t) represents the mass of salt, in grams, and 't' represents time, in seconds.
a) when will all of the table salt be dissolved? round your answer to two decimal places.

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

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