What is the 18th term of the arithmetic sequence 2, -2, -6, -10,...? Need help rn

Answers:
A -72
B- 70
C- 68
D -66

Which function is represented by the graph

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

Solve 3x-18=2y and 5x-6y=6 by elimination show work