Exponential Functions Worksheet Page 3
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2
3
419. Write an exponential function that models the points in the table.
x
y
x
y
Factor:
Factor:
1
50
Initial amount:
1
2
Initial amount:
Rate (%):
2
7.5
Rate (%)
2
8
Now-Next Rule:
3
1.125
Now-Next Rule:
3
32
4
0.16875
4
128
Equation: y=__________
Equation: y=_________
20. Use the table about zombie attacks to answer.
a. Find the exponential regression model. Round to
15
three decimal places.
20
28
38
b. What is the correlation coefficient for this data
52
and what does it tell you? (round to four
72
decimal places)
96
131
c. Using our regression model, determine how
many zombies will be present in 30 minutes.
B
A
Write the equation of the graph that corresponds
to each equation.
!
!
21. �� = 2
!
D
!
!
22. �� =
C
!
E
!
23. �� = 2
!
24. �� = −2
25. �� = 2��
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