Your answer would be C.
I just plugged in the numbers on a piece of paper and they all fit :)
A1 = 6 a5 = -6
a1 + d(n-1) = -6
6 +4d = -6
4d = -12
d = -3
a3 = a2 + d = -6 -3 = -9
Answers
1. B) 31
2. B) 4
3. A) 15
4. D) 24
5. A) 3
MARK BRAINLEIST PLS THIS TOOK A LOT OF TIME
8x40=320 (+) 8x7=56 (=) 376.
A=40
hope this helped
