12^4 which is equal to 12 times itself 4 times
B and C are absurd; if a series converges, it must have a sum, but if a series diverges, it cannot have a sum.
Now, notice that

That is, we can write the sum more compactly as

The series is geometric with common ratio

, so the series converges (and thereby has a sum), so the answer is D.
to graph f (x) + k, move the graph k units up..your answer should be;
y = x ^ 2 + 5/2
At the end of the 6 months the balance would be 360.54
What you do first is add the books 42 + 85 + 69 which equals 196. Then divide 196 by 7 and you get 28 :)