Question

Find the 15th term of the arithmetic sequence.a+1,2a+1,3a+1

Answer 1

T15=15a+1

Explanation:

T1=a+1

T2=2a+1

T3=3a+1

................

T15=15a+1

Tn=n*a+1

Answer 2

I think it’s 15a+1 but don’t take my word for it