Write an equation of the parabola shown.

Step-by-step explanation:

General equation of a parabola parallel to the x-axis: (y - k)^2 = 4p(x - h).

Vertex = (h, k) = (0, 0)

Directrix: x = h - p = -2.

Since h and k are 0, p must be 2.

Therefore the equation is y^2 = 8x.

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.

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