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AA3-1 Investigation -- exponential growth and decay cloned 1/19/2021

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Last updated over 4 years ago
19 questions
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Question 1
1.

Describe what is happening to f(x) as x increases:

Question 2
2.

Write an equation for f(x)

Question 3
3.

Describe what is happening to f(x) as x increases:

Question 4
4.

Write an equation for f(x)

Question 5
5.

Describe what is happening to f(x) as x increases:

Question 6
6.

Write the equation of f(x), if possible

Question 7
7.

Describe what is happening to f(x) as x increases:

Question 8
8.

Write the equation of f(x), if possible.

You were likely unable to write the equation for the last two tables. They are exponential functions. In AA3-3, we will study graphing exponential functions in the form:
However, for now, we will write exponential functions centered at the origin so (h,k) is (0,0). As a result, we will write exponential functions in the form:
-- a is the starting value (f(0))
-- b is the rate of growth or decay (what we are multiplying by each time)
-- x is the number of times something occurs. It is often, but not always, an amount of time.
Question 9
9.

Because f(x) increases as x increases, this function is a model of exponential growth.
Write the exponential equation for this table:

Question 10
10.

Because f(x) decreases as x increases, this function is a model of exponential decay.
Write the exponential equation for this table:

Question 11
11.

Complete the table for f(x)=4(3)x by evaluating f(0), f(1), f(2), and f(3).
Don't forget (anything)0 = 1.
Depending on the calculator, you use the ^ button or ab or xy to create an exponent.

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.
Question 12
12.

Question 13
13.

Complete the table for f(x)=4(0.75)x by evaluating f(0), f(1), f(2), and f(3).
Don't forget (anything)0 = 1.
Depending on the calculator, you use the ^ button or ab or xy to create an exponent.

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.
Question 14
14.

Question 15
15.

Predict whether f(x) = 1/2 (5)x is a model for exponential growth or decay?

Question 16
16.

Complete the table for f(x)= 1/2 (5)x by evaluating f(0), f(1), f(2), and f(3).
Don't forget (anything)0 = 1.
Depending on the calculator, you use the ^ button or ab or xy to create an exponent.

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.
Question 17
17.

Question 18
18.

How do you know if an exponential function will model growth or decay?

Question 19
19.

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Is f(x) = 4(3)x a model for exponential growth or decay?
growth
decay
Is f(x) = 4(0.75)x a model for exponential growth or decay?
growth
decay
Is f(x) = 1/2 (5)x is a model for exponential growth or decay?
growth
decay
Match each exponential function:
neither
f(x)=8(1.7)x
neither
f(x)=8(0.7)x
growth
f(x)=8(1/4)x
growth
f(x)=1/4(8)x
decay
f(x)=8(0)x
growth
f(x)=8(1)x
decay
f(x)=1(8)x