Answer:
10
Step-by-step explanation:
A coefficient is a multiplicative factor. Whatever is in front of the variable is a coefficient
I got 3/8, hope this helps.
Answer:
an = (1 + 2·(n - 1))/2^(n - 1) = 2^(1 - n)·(2·n - 1)
sn = 6 - 2·0.5^n·(2·n + 3)
To do this add all the numbers up then divide it by the amount of numbers there are