I think its B.) because if u count it all properly u would realize that they would all have to same numbers to match
So firstly, square root 9a^2 and 49: 
Next, combine like terms, and your answer will be
, or the third option.
Answer:
5
Step-by-step explanation:
Total = 500 * ([(1 + .07)^26 -1] / .07) -500
Total = 500 * (<span><span>4.8073529249
</span>
/ .07) -500
</span>Total = 500 * (<span>68.6764703562) -500
</span>Total =
<span>
<span>
<span>
33,838.24
</span></span>
Source:
http://www.1728.org/annuity.htm
</span>