Joe receives an average of 780 emails in his personal account and 760 emails in his work account each month. after changing his addresses, the number of emails in his personal account decreases by 10% and the number of emails in his work account decreases to 722 each month.

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.

the first option is the answer.

the answer to your question is c.)   volcanoes built the mountains and earthquakes tore them down.

step-by-step explanation: