1/6 (divide each by 2)
4/24 (multiply each by 2)
-320. The negative sign represents loss. In all of the other cases, values are either being added or not changed at all.
Answer:
The first term is:
Step-by-step explanation:
The arithmetic sequence is defined by

where
is the first term
is the common difference
as
the 17th term of an arithmetic sequence is 51.
i.e. 
so

∵
,
, 
∵ 

Therefore, the first term is:
Answer:
s
sStep-by-step explanation:
Answer:
1.5 because it is the average of the two middle numbers in this scenario.