Answer:
i think 4 is correct
Step-by-step explanation:
The 1st, 4th, and 7th terms make an arithmetic sequence of their own. The 4th term is the average of the 1st and 7th, so ...
(1st +7th)/2 = 4th
1st + 7th = 2×4th
1st = 2×4th - 7th
The first term is ...
2*141 - 132 = 150
B is the answer hope it helps
Answer: The perimeter of the triangle is 33b - 8
Step-by-step explanation: