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olganol [36]
3 years ago
13

Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge

that a person retains after t weeks. The formula is p = (100 – a)e-bt + a, where a and b vary from one person to another. If a = 18 and b = 0.6 for a certain student, how much information will the student retain two weeks after learning it?
Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

42.69% of information is acquired by the student in two weeks.

Step-by-step explanation:

We are given the following in the question:

p = (100 -a)e^{-bt} + a

where a and b are constants.

a = 18\\b = 0.6

p tells us about the percentage of acquired knowledge that a person retains after t weeks.

We have to find the percentage of knowledge acquired in two week.

We put t = 2

p = (100 -18)e^{-(0.6)(2)} + 18\\p = 42.69

Thus, 42.69% of information is acquired by the student in two weeks.

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Part 1) Intervals of the domain where the  graph is above the x-axis (f(x) > 0)

Part 2) location on graph where input is zero  (y-intercept)

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<u><em>Verify each case</em></u>

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we know that

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location on graph where input is zero  

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f(x) ---> the dependent variable or output value

we know that

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therefore

y-intercept

Part 3) we have

location on graph where output is zero  

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x ---> the independent variable or input value

f(x) ---> the dependent variable or output value

we know that

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If the graph is below the x-axis, then the value of f(x) is negative

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5 0
3 years ago
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