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)?
f(n) = 16(0.5)n − 1
f(n) = 32(0.5)n − 1
f(n) = 16(0.5)n
f(n) = 32(0.5)n + 1
1 answer:
Answer:
f(n) = 16(0.5)ⁿ⁻¹
Step-by-step explanation:
Find f(1) for each option.
a) f(1) = 16(0.5)¹⁻¹ = 16
b) f(1) = 32(0.5)¹⁻¹ = 32
c) f(1) = 16(0.5)¹ = 8
d) f(1) = 32(0.5)¹⁺¹ = 8
Only the first option matches the table.
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