Ariel makes this model to show a division equation. Which equation matches Ariel's model? 200 10 1 00 1,600 8 80 1,688 :8= 211 1,512 : 8 = 189 1,600 2 = 800 1,600 + 80 = 8​

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for