Question

Identify the sequence graphed below and the average rate of change from n = 1 to n = 3.

Answer 1

an = 8(one half)n − 2; average rate of change is −6

an = 10(one half)n − 2; average rate of change is 6

an = 8(one half)n − 2; average rate of change is 6

an = 10(one half)n − 2; average rate of change is −6

Answer 2

omg marry me? :DDDD

Answer 3

@aum ?

Answer 4

Well, the answer is obvious but I am having trouble figuring it out the way to explain it so it is easy to understand.

Answer 5

is it the first one?

Answer 6

As we increase x in steps of one going from 2 to 3 to 4, the corresponding y-value keeps getting half of the previous value. So y = A(1/2)^(x+B). We just need to put two points from the graph, say, (2,8) and (3,4) to figure out A and B.
A = 8, B = -2. So y = 8(1/2)^(x-2) or an = 8(1/2)^(n-2)

Answer 7

so it's an = 8(one half)n − 2; average rate of change is −6

Answer 8

Average rate of change from n = 1 to n = 3 is:
{ a3 - a1 } / { 3 - 1 } = -6

Answer 9

ty so much!

Answer 10

yw.

Answer 11

This was correct XD thankuuu