Answer:
an = 8-3(n-1)
an = 11 - 3n
Step-by-step explanation:
This is an arithmetic sequence which is defined by
an = a1 + d(n-1)
where a1 is the first term of the sequence and d is the common difference
a1 = 8
d = a2-a1
d = 5-8 = -3
an = 8 + -3(n-1)
an = 8-3(n-1)
We can simplify this by distributing the -3
an = 8 -3n +3
an = 11 - 3n
