X = -1/8y^2 The focus of the parabola is: (0, -2) (-2, 0) (2, 0)

6.5

step-by-step explanation:

you said it was in the question

~courtney

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.