Answer:
C. 666
Step-by-step explanation:
USING PEMDAS we can solve this problem.
If
is the common difference between terms in the sequence
, then
...
You're told that
(the sum of the first 16 terms in the sequence, presumably). Well, we know that
Recall that
so that we have
So we get
Answer:
30
Step-by-step explanation:
do parenthesis
then exponents
then multiply or divide (left to right')
then add or subtract (left to right)