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Exponential Functions - Geometric Sequences

Authored by Natalie Walters

Mathematics

9th Grade

CCSS covered

Used 81+ times

Exponential Functions - Geometric Sequences
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6 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

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

Exponential Growth
Linear
Exponential Decay
Quadratic

Tags

CCSS.HSF-IF.C.8B

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

y=5000(0.7)x
y=30(5000)x
y=5000(1.3)x
y=5000xx

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

y=6(0.14)x
y=6(1+14)x
y=6(1.14)x
y=6(0.86)x

Tags

CCSS.HSF.LE.A.2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What type of function is

 f(x)=2(17)xf\left(x\right)=2\cdot\left(\frac{1}{7}\right)^x  

Exponential Growth

Linear

Exponential Decay

None of the Above

Tags

CCSS.HSF-IF.C.8B

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

y = 15(35)x
y = 15(1.35)x
y = 15(0.35)x
y = 35(1.15)x

Tags

CCSS.HSF.LE.A.2

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A new savings account is opened with $400 and earns 3% interest per year. What is the exponential function?

f(x) = 400(3)x

f(x) = 400(0.97)x

f(x) = 400(1.03)x

f(x) = 400(0.03)x

Tags

CCSS.HSF.LE.A.2

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