The formula for arithmetic sequences is
a\/n= a\/1 + (n-1)d,
and n represents # of terms
With the information, we can make the equation:
a\/n= 5 + (n-1)(4) .
Then, since n= 22 in this particular problem, we can plug that number in.
a\/22 = 5 + (22-1)(4)
a\/22 = 5 + (21)(4)
a\/22 = 5 + (84)
a\/22 = 89
In conclusion, 89 is the value of the 22nd term
