An arithmetic sequence has this recursive formula:
a1=6
an=an-1-3
what is the explicit formula for this sequence?

 D.

Step-by-step explanation:

Given : An arithmetic sequence has this recursive formula:

Using the given information, Second term of arithmetic sequence will be :-

That means common difference =

The explicit formula for arithmetic sequence is given by :-

, where a is the first term and d is the common difference.

Put a= 6 and d= -3, we get

The explicit formula for this sequence :-

all it means is function 3

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.