Exponential Functions

Exponential Functions

9th - 12th Grade

12 Qs

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Exponential Functions

Exponential Functions

Assessment

Quiz

Mathematics

9th - 12th Grade

Medium

Created by

William Lefkovics

Used 6+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Does the graph represent an exponential growth or an exponential decay function?

Growth

Decay

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What equation represents the balance of a $2,000 deposit that paid 5% interest over 3 years?

A=2000(5)3A=2000\left(5\right)^3

A=2000(1+5)3A=2000\left(1+5\right)^3

A=2000(1+.05)3A=2000\left(1+.05\right)^3

A=2000(1+.5)3A=2000\left(1+.5\right)^3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 In the exponential function to calculate compound interest A=P(1+rn)ntA=P\left(1+\frac{r}{n}\right)^{nt} what does the variable n represent?

n = time in years

n = nominal interest

n = number of compounding periods in a year

n = root thingie

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Does the equation represent exponential growth or decay?

Growth

Decay

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculate the y-intercept for the graph of the exponential function y=(1.35)xy=\left(1.35\right)^x 


 (0, 1.35)\left(0,\ 1.35\right)  

 (0, 1.8225)\left(0,\ 1.8225\right)  

 (0, 0)\left(0,\ 0\right)  

 (0, 1)\left(0,\ 1\right)  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A bacteria culture is started in a petri dish with 1200 organisms. After 4 hours, there are 2400 giving a growth factor of 1.26 from this equation: 2400=1200a42400=1200a^4  

How many bacteria are expected after 8 hours?

 f(8)=1200(1.26)8f\left(8\right)=1200\left(1.26\right)^8  

 f(8)=12008f\left(8\right)=1200^8  

 1200=1.2681200=1.26^8  

 f(8)=1.268f\left(8\right)=1.26^8  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A deposit of $2500 has an interest rate of 4% compounded continuously. What would the balance be after 3 years?

A=2500(1+0.04)3A=2500\left(1+0.04\right)^3

A=2500e3A=2500e^3

A=2500e0.04A=2500e^{0.04}

A=2500e(0.04)(3)A=2500e^{\left(0.04\right)\left(3\right)}

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