Six million, seven thousand, two hundred
(6,000,000) + (7,000) + (200)
-18=7-4y
-7 -7
________
-25=-4y
___ ___
-4 -4
y= 6.25
Answer: 281
Step-by-step explanation:
The first differences are 8, 14, 20.
The second differences are 6.
Half of 6 is 3, so the first term of the sequence is 3n^2.
If you subtract 3n^2 from the sequence you get 0,-1,-2,-3 which has the nth term of -n + 1.
Therefore your final answer will be 3n^2 - n + 1