Question

What are the first four terms of the sequence shown below?

an = 5n ‒ 1
A.
‒1, 4, 9, 14
B.
4, 9, 14, 19
C.
5, 6, 7, 8
D.
6, 11, 16, 21

Answer 1

`a_n=5n-1\\\\a_1=5(1)-1=5-1=4\\\\a_2=5(2)-1=10-1=9\\\\a_3=5(3)-1=15-1=14\\\\a_4=5(4)-1=20-1=19\\\\Answer:\ B.\ \{4,\ 9,\ 14,\ 19\}`