Half of the 30 squares below are to be marked with an x.

X = y30

(30 x 4 + denominator = (x-y)

(y + ) - 40y = frac(/87^>5/6)

5 - 6 (9.99999999) 405

*7>8 (405) divided by the equal amount

=y - 8 (49>0)

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.