Question

5,9,13...
Find the 31st term

Answer 1

a(31) =125

Explanation:

d=9-5=13-9=4

then it is an arithmetic sequence

a(n) = a1 +(n-1)d

a(n) = 5 +(n-1)4

a(31) = 5 +(31-1)4

=125

hope this helps