I have a graph with a Geometric sequence graphed on it. The first 4 points are
(2, 10), (3, 5), (4, 2.5), and (5,1.25)
I have to find the rate of change from n = 1 to n = 2. I also have to find the formula. I'm not sure if it's 20(1/2)n-1 or 10(1/2)n-1

Question

I have a graph with a Geometric sequence graphed on it. The first 4 points are
(2, 10), (3, 5), (4, 2.5), and (5,1.25)
I have to find the rate of change from n = 1 to n = 2. I also have to find the formula. I'm not sure if it's 20(1/2)n-1 or 10(1/2)n-1

anonymous · Answer

Also, I thought the rate of change was negative, but if it's 1/2, then it's positive, right?