Answer:
Step-by-step explanation:
[tex]a_{n} =6n - 3\\\\a_{1} = 6*1 -3 = 6 -3 = 3\\\\a_{2} = 6*2 - 3 = 12 - 3 = 9\\\\a_{3}=6*3 - 3 = 18 - 3 = 15\\\\a_{4}=6*4 -3 = 24 -3 = 21\\[/tex]
3 , 9 , 15 , 21 , ........
