Question is asking about the pattern of numbers can be produced by the formula
[tex]a_n=3n-4[/tex]
So we will just plug numbers n=1,2,3,4,... ot find the required terms of the pattern
For n=1
[tex]a_n=3n-4[/tex]
[tex]a_1=3*1-4=3-4=-1[/tex]
For n=2
[tex]a_n=3n-4[/tex]
[tex]a_2=3*2-4=6-4=2[/tex]
For n=3
[tex]a_n=3n-4[/tex]
[tex]a_3=3*3-4=9-4=5[/tex]
For n=4
[tex]a_n=3n-4[/tex]
[tex]a_4=3*4-4=12-4=8[/tex]
Using same method we can find more numbers.
Hence required pattern is -1, 2, 5, 8, ...
