16) When diagonal WY is drawn in trapezoid WXYZ, why will Angle XYW and angle ZWY always be congruent?

A) They are complementary angles.
B) They are acute angles.
C) They are alternate interior angles.
D) They are corresponding angles.

x=9

step-by-step explanation:

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.