The vertex of the parabola is at (2,-1). When the y-value is 0, the x-value is 5. What is the coefficient of the squared term in the parabola's equation? A. 4. B. -4. C. 3. D. -3

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.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72