Answer:
0.7
Step-by-step explanation:
Answer:

Step-by-step explanation:
We have been given a recurrence relation
and the first term of the sequence
.
We can rewrite the given recurrence relation as: 
We know that if difference between two consecutive terms is always constant, the sequence is called an arithmetic sequence. So we are dealing with an arithmetic sequence with first term as 4 and common difference as 12.
We can therefore, write an explicit formula for nth terms of the sequence as.

This is the required explicit function rule for the given sequence.
It would be (3,0) and (0,3) respectively.
Answer:
Hi there! Your answer here is 11kg - the average of the seven weights is 11kg. To find the average of a group of numbers, you add all of the numbers (12, 12, 12, 12, 12, 12, 5), then divide by the count of those numbers (7).
12 + 12 + 12 + 12 + 12 + 12 + 5 (or 12*6 + 5) is equal to 77.
77 / 7 = 11.
So the average of the seven weights is 11kg.
Have a great day! - Mani :)