Determine whether the sequence is arithmetic or geometric.
Sequence 1: -10, 20,-40,80,…
Sequence 2: 15,-5,-25,-45,…
Which of the following statements are true regarding sequence 1 and sequence 2.
Both sequences are arithmetic.
Both sequences are geometric.
Sequence 2 is arithmetic and sequence 1 is geometric.
Sequence 1 is arithmetic and sequence 2 is geometric.
Sequence 1 is a geometric sequence with a common ratio of -2. Sequence 2 is an arithmetic sequence with a common difference of -20.
Therefore, the statement "Sequence 1 is arithmetic and sequence 2 is geometric" is true.