Midge added some chlorine to the water in a pool. The chlorine evaporated at a fixed rate every week. The table below shows the amount of chlorine f(n), in ounces, that was left in the pool after n weeks:

n

f(n)

1

16

2

8

3

4

4

2

Which function best shows the relationship between n and f(n)?

A. f(n) = 16(0.5)n-1

B. f(n) = 32(0.5)n-1

C. f(n) = 16(0.5)n

D. f(n) = 32(0.5)n+1

Question

Midge added some chlorine to the water in a pool. The chlorine evaporated at a fixed rate every week. The table below shows the amount of chlorine f(n), in ounces, that was left in the pool after n weeks:





n

f(n)



1

16



2

8



3

4



4

2



Which function best shows the relationship between n and f(n)? 

A. f(n) = 16(0.5)n-1 

B. f(n) = 32(0.5)n-1

C. f(n) = 16(0.5)n

D. f(n) = 32(0.5)n+1

imstuck · Answer

is that n, n-1, and n+1 an exponent like this (the first option is the example I'm using)$$f(n)=16(.5)^{n-1}$$

anonymous · Answer

i hope this helps http://www.mathportal.org/calculators.php

anonymous · Answer

Thanks