Find an explicit formula for the arithmetic sequence
−
31
,
−
27
,
−
23
,
−
19
,
.
.
.
−31,−27,−23,−19,...minus, 31, comma, minus, 27, comma, minus, 23, comma, minus, 19, comma, point, point, point.
Note: the first term should be
b(1)
b(1)start text, b, left parenthesis, 1, right parenthesis, end text.
b
(
n
)
=