Answer:
B. -0.5
Step-by-step explanation:
I calculated it logically
Answer:
A. 2a+6
Step-by-step explanation:
I did the test and this is what I got.
An arithmetic sequence has a common difference.
143 - 130 = 13
156 - 143 = 13
169 - 156 = 13
The common difference is 13.
a1 = 130
a2 = 130 + 13
a3 = 130 + 2 * 13
a4 = 130 + 3 * 13
...
an = 130 + (n - 1) * 13
an = 130 + 13(n - 1)
an = 130 + 13n - 13
an = 117 + 13n
an = 13n + 117
Answer:
37/60 OR 111/180
(37/60 is simplified and 111/180 is the original)
