Given the first five terms of the sequence 19, 15, 11, 7, 3 . . . , use subscript notation to describe a7 .(1 point) Responses a7=−1 a subscript 7 baseline equals negative 1 a7=−5 a subscript 7 baseline equals negative 5 a7=−4 a subscript 7 baseline equals negative 4 a7=−9

a7=-1, a subscript 7 baseline equals negative 1