If a bag of pumpkin seeds must weigh within 2.1 grams in order to be accepted, each bags must weigh between (400-2.1) grams and (400+2.1) grams. This means that if a bag weighs less than 397.9 grams (x<397.9) or more than 402.1 grams (x>402.1) it will be rejected. Therefore, 397.9>x>402.1 is the range of rejected bags.
In the table states the frequency of the marbles. It says in the 40 tries she had a frequency of 24 marbles that are yellow and for green it states the frequency is 16 marbles for green.
Looks like the starting series is
Note the degree of the first few terms in the series, for 
, are 
, and so on.
So if the series were to start at 
, we would need to preserve that pattern, and we do that by replacing 
with 
:
Simplifying a bit, we end up with
Answer:
The answer to this question is 4.
