The answer is C because if something is divided by zero, it is undefined.
<em><u>The common difference d is </u></em>
<em><u>The first term is</u></em>
<em>so , the first term is -13 </em>
First you can count multiples of 7 all the way up to 84. 7,14,21,28,35,42,49,56,63,70,77,and 84.
Or you can do 7 x 12 equals 84.
Second write down the long division way 84/7.
7 goes into 8 one time write 7 at the top then write one at the bottom bring down the 4 and make it 14
you know 7 x 2 = 14 so 12 x 7 equals 14.
Answer:

Step-by-step explanation:

This means that 4/5 repeats itself 3 times.
So,
![\sf = \frac{4}{5} * \frac{4}{5} * \frac{4}{5} \\\\= \frac{64}{125} \\\\\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Csf%20%3D%20%5Cfrac%7B4%7D%7B5%7D%20%2A%20%5Cfrac%7B4%7D%7B5%7D%20%2A%20%5Cfrac%7B4%7D%7B5%7D%20%5C%5C%5C%5C%3D%20%5Cfrac%7B64%7D%7B125%7D%20%5C%5C%5C%5C%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3>