Find the 4th term in the sequence with the following definition help meeeeeeeeee

Answer:
-37.
Step-by-step explanation:
a2 = 2 a2-1 - 3
= 2 a1 - 3
= 2*-2 -3
= -7
a3 = 2 a3 - 3
= 2*-7 - 3
= -17
4th term a4
= 2*-17 - 3
= -37.