Answer:
[tex]\boxed{\boxed{\sf~a_6=23}}[/tex]
Solution Steps:
This is an arithmetic sequence since there is a common difference between each term. In this case, adding 5 to the previous term in the sequence gives the next term. In other words, [tex]a_n=a_1+d(n-1)[/tex].
Arithmetic Sequence: [tex]d=5[/tex]
Find the next term using the Arithmetic Sequence.
Arithmetic Sequence: [tex]a_6=a_5+5[/tex]
[tex]a_6=18+5=23[/tex]