Arecursive rule for a geometric sequence is a1=8; an=3/4(an-1). what is the explicit rule for this sequence?
a. an = 1/4 (8)n-1
b. an=8(3/4)n-1
c. an =3/4 (8)n-1

  B.  an=8(3/4)^(n-1)

Step-by-step explanation:

The general term of a geometric sequence with first term a1 and common ratio r is ...

  an = a1·r^(n-1)

The recursive rule for the sequence tells you the first term is 8 and the common ratio is 3/4. Then the explicit rule is ...

  an = 8(3/4)^(n-1) . . . . . matches choice B

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!