Question

A1=5

an=an−1−3

Which sequence is represented by the given information?
{5,8,11,14}
{5,2,−1,−4}
{5,4,3,2}
{0,−3,−6,−9}

Answer 1

`a_1=5\\\\a_n=a_(n-1)-3\\\\a_2=a_1-3\to a_2=5-3=2\\\\a_3=a_2-3\to a_3=2-3=-1\\\\a_4=a_3-3\to a_4=-1-3=-4\\\\Answer:\ \{5,\ 2,\ -1,\ -4\}`