Question

Given the functions f(n) = 25 and g(n) = 3(n − 1), combine them to create an arithmetic sequence, an, and solve for the 12th term

Answer 1

nth term of an AP is
\[a_{n}=a+(n-1)d\]
if you let f(n) be the first term and g(n) be the (n-1)d then
your f(n) and g(n) can be used like that to create an AP
\[a_{n}=f(n)+g(n)\]

Answer 2

find \[a_{12}\] now