Select ALL the ratios that are equivalent to each other? Group of answer choices

4 : 7

8 : 15

16 : 28

2 : 3

20 : 35

4:7 and 20:35 4:7 and 16:28 2:3 and 20:35

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.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.