What is the vertex of the parabola
y = 5x2 - 20x + 13

y do u put "subscirbe to ence" on a app for ppl who need with their work?

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

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.