Draw an area model and then solve using the standard algorithm

well if your asking for 21 x 23 its 483

Step-by-step explanation:

Hi if the awnser for the equation is not the anwser your looking for please comment so I can help you with something else and here how you get the anwser you can break 21 and 23 down so 20 +1 and 20+ 3 then these steps or array.

20x20=400

20x1=20

20x3=60

3x1=3

Now add those numbers together you get 483

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.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )