Carbon - 14 decays exponentially according to the model A = Aoe^-0.00012t where t is
measured in years.
a) If there was an initial amount of 700 grams, how much would remain after 80 years

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.