What is f(5) if f(1) = 3.2 and f(x + 1) =5/2 (f(x))?

2 answers:

8 0

F(x + 1) = (5/2)*f(x)

f(x + 1) = 2.5*f(x), f(1) = 3.2

f(2) = 2.5f(1) = 2.5*3.2 = 8

f(3) = 2.5f(2) = 2.5*8 = 20

f(4) = 2.5f(3) = 2.5*20 = 50

f(5) = 2.5f(4) = 2.5*50 = 125

AfilCa [17]3 years ago

3 0

Answer:

The answer is 125 on E2020 guys. Just got it right.

Step-by-step explanation:

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How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 95% confidence that

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Answer:

61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.

Step-by-step explanation:

Given : We want 95% confidence that the sample mean is within 3 minutes of the population mean, and the population standard deviation is known to be 12 minutes.

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Solution :

At 95% confidence the z-value is z=1.96

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The formula of margin of error is given by,

$E=\frac{s\times z}{\sqrt{n}}$