Answer
See below.
Work Step by Step
According to the exercise:
$a_1=4$
$a_2=a_1+9=4+9=13$
$a_3=a_2+9=13+9=22$
$a_4=a_3+9=22+9=31$
$a_5=a_4+9=31+9=40$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.