9000065302

SubArea: 
Arithmetic sequences
Level: 
A
Project ID: 
9000065302
Accepted: 
1
Clonable: 
0
Easy: 
1
Find the formula for the n-th term of an arithmetic sequence with the first term a1=1 and the second term a2=−2.
an=4−3n, n∈N
an=1−2n, n∈N
an=−2+n, n∈N
an=3+2n, n∈N