AnswersModern Math KHSPopulation Growth

Population Growth Answers

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4

The table of values below represent an exponential function. Find the constant ratio of successive y-values. x y-28-1120181 272 40.5

A
0.5
B
8
C
1.5
D
1.33
5

A 30-gram sample of bacteria has some unknown disease that is killing the bacteria. The amount of bacteria is measured each day and the results are shown in the table. Number of Days (d)Amount of Bacteria in Grams (A)030128.5227.075325.72424.44523.21622.05What is the decay factor of this data?

A
Decay factor is 0.95
B
Decay factor is -1.5
C
Decay factor is 14.25
D
Decay factor is 0.05
6

Find the missing value for the exponential function represented by the table below.xy-221-114.7010.291 25.0421

A
9.213
B
8.756
C
7.203
D
-7.203
7

When Anna was born 16 years ago, her small town of Lewisville had a population of 15,000. The population has increased 11% each year since then. What is the current population of this town?

A
The population of this town is approximately 68,925
B
The population of this town is approximately 79,663
C
The population of this town is approximately 17,324
D
The population of this town is approximately 240,000
8

On a graph, what characteristic shape is shown by exponential growth?

A
T-shaped graph
B
S-shaped graph
C
J-shaped graph
D
straight horizontal line
12

Find the missing values for the exponential function represented by the table below.xy-27-110.5015.751 2

A
10.57
B
-23.625-35.4375
C
23.62535.4375
D
-23.62535.4375
16

Which is NOT an example of an exponential function?

A
population growth
B
exponential decay
C
compound interest
D
simple interest
18

Twenty years ago a small town in Texas had a population of 10,000. The population has increased 8% each year since then. Predict what the population of the town will be in 10 more years.

A
In 10 more years the population of this town will be approximately 21,589
B
In 10 more years the population of this town will be approximately 100,626
C
In 10 more years the population of this town will be approximately 123,794
D
In 10 more years the population of this town will be approximately 81,966

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