Brianna can rake a yard in 6 hours. Heather can rake the same yard in 4 hours. How long would it take the girls to rake the yard if they worked together? Round to the
nearest tenth if needed.

the answers c

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.

true

step-by-step explanation:

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