If 10 cookies cost $2.00, how much will 25 cookies cost? Thank you!

$5.00

Step-by-step explanation:

25 = 10 + 10 + 5

If 10 = $2.00,

20 = $4.00.

10 / 2 = 5,

and $2.00 / 2 = $1.00

$4.00 + $1.00 = $5.00

Hope this helps! Good luck!

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.