Answer:
8, 11, 14, 17
Step-by-step explanation:
Arithmetic sequence:
To find first four terms, substitute n = 1, 2, 3 and 4 in the given formula and simplify.
[tex]\sf a_n= 3n + 5\\\\ n = 1 \ ; \ a_1 = 3*1 + 5[/tex]
= 3 + 5
= 8
[tex]\sf n = 2 \ ; \ a_2 = 3*2 + 5[/tex]
= 6 + 5
= 11
[tex]\sf n = 3 \ ; \ a_3 = 3*3 + 5[/tex]
= 9 + 5
= 14
[tex]\sf n = 5 \ ; \ a_4 = 3*4 + 5[/tex]
= 12 + 5
= 17
The first four terms are: 8, 11, 14, 17
