Quiz about Representing Exponential Decay

Question 1

Is this exponential growth or decay?

Accepted Answer

Decay

Answer

Growth

Question 2

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

Accepted Answer

y=5000(0.7)^x

Answer

y=30(5000)^x

Answer

y=5000(1.3)^x

Answer

y=5000xx

Question 3

Is this exponential growth or decay?

Accepted Answer

Decay

Answer

Growth

Question 4

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)⁶

Accepted Answer

Decay

Answer

Growth

Question 5

This is an example of.....

Accepted Answer

exponential decay

Answer

exponential growth

Answer

constant change

Answer

a linear function

Question 6

Which represents exponential decay?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 7

The population of Townville is decreasing at a rate of 6% each year. If the starting population was 7,000 what equation represents the current population after x number of years?

Accepted Answer

$$f\left(x\right)=7000\left(0.94\right)^x$$

Answer

$$f\left(x\right)=7000\left(0.6\right)^x$$

Answer

$$f\left(x\right)=7000\left(0.4\right)^x$$

Answer

$$f\left(x\right)=7000\left(0.06\right)^x$$

Question 8

Choose the correct graph for the situation in problem #6.

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Answer

E.

Question 9

Choose the correct graph for the situation on problem #5

Accepted Answer

Option E is correct

Answer

A.

Answer

B.

Answer

C.

Answer

D.

Question 10

Question 10.

Accepted Answer

Exponential Decay

Answer

Exponential Growth

Answer

Quadratic

Question 11

Identify each function as representing exponential growth or decay.
f(x) = 4(0.89)^x

Accepted Answer

decay

Answer

growth

Question 12

Write an equation

Accepted Answer

y = (20)0.5^x

Answer

y = (20)0.25^x

Answer

y = (0.5)20^x

Question 13

Question 13.

Accepted Answer

B Decay

Answer

A Growth

Answer

C Both

Answer

D Neither

Question 14

What are the asymptotes?

Accepted Answer

x=2 and y=1

Answer

x=-2 and y=-1

Answer

x=-2 and y=1

Answer

x=2 and y = -1

Question 15

What type of function is f(x)=2(1/7)^x ?

Accepted Answer

Exponential Decay

Answer

Exponential Growth

Answer

Linear

Answer

None of the Abovee

Question 16

Which equation represent this situation?

Accepted Answer

y = 7800(0.92)^t

Answer

y = 7800(1.08)^t

Answer

y = 1.08(7800)^t

Answer

y = 0.92(7800)^t

Representing Exponential Decay

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