Quiz about Algebra IM Unit 5 EOU Exponential Functions

Question 1

What is a, the starting (initial) value, for the function: f(x) = 300(1.16)^x?

Accepted Answer

300

Answer

1.16

Answer

.16

Answer

x

Question 2

Classify the model as Exponential GROWTH or DECAY.
$A=1200(0.85)^x$

Accepted Answer

Decay

Answer

Growth

Question 3

Classify the model as Exponential GROWTH or DECAY.

A=10(1.21)³

Accepted Answer

Growth

Answer

Decay

Question 4

Is this exponential growth or decay?

Accepted Answer

Decay

Answer

Growth

Question 5

Write an equation

Accepted Answer

y = (20)0.5^x

Answer

y = (20)0.25^x

Answer

y = (0.5)20^x

Question 6

Identify the y-intercept (starting value) in the function f(x)=13(.27)^x

Accepted Answer

13

Answer

(.27)x

Answer

.27

Answer

3.51

Question 7

Which equation shows the function with the greates growth factor?

Accepted Answer

y = 15(1.35)^x

Answer

y = 15(35)^x

Answer

y = 15(0.35)^x

Answer

y = 35(1.15)^x

Question 8

Is the pictured graph growth, decay, or linear or none?

Accepted Answer

Exponential Growth

Answer

Exponential Decay

Answer

Linear

Answer

None

Question 9

Is the pictured graph growth, decay, or linear or none?

Accepted Answer

Growth

Answer

Decay

Answer

Linear

Answer

None

Question 10

Ty's house is worth $100,000 right now. It will lose value at a rate of 2% per year.
Which function models this situation?

Accepted Answer

f(x) = 100,000(0.98)^x

Answer

f(x) = 100,000(0.02)^x

Answer

f(x) = 100,000(1.02)^x

Answer

f(x)=100,000(98)^x

Question 11

Which of the following is an increasing exponential function whose y-intercept is 50?

Accepted Answer

y = 50(1.4)^x

Answer

y = 50(.05)^x

Answer

y = 50x - 4

Answer

y = (2)^x + 50

Question 12

In which city is the 2007 Disney film Ratatouille?

Accepted Answer

Paris

Answer

London

Answer

New York

Answer

Milan

Question 13

For which function does y increase by 35% every time x increases by 1?

Accepted Answer

y = (1.35)^x

Answer

y = (0.65)^x

Answer

y = 35x

Answer

y = 65x

Question 14

Is the following function and example of decay or growth?

f(x)=2(0.85)^x

Accepted Answer

Exponential Decay

Answer

Exponential Growth

Question 15

The expression 12(1.015)^t models the population of elephants in a wildlife refuge after t years since 1975.
Is the population of elephants increasing or decreasing?

Accepted Answer

Increasing

Answer

Decreasing

Question 16

How do you write 5% as a decimal?

Accepted Answer

0.05

Answer

50

Answer

5

Answer

0.5

Question 17

What is the growth factor of bacteria if the population is doubling each day?

Accepted Answer

2

Answer

4

Answer

1/2

Question 18

Algae is being treated on a pond and is losing a third of it's area every day. What is the growth/decay factor?

Accepted Answer

2/3

Answer

1

Answer

3

Answer

1/3

Algebra IM Unit 5 EOU Exponential Functions

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