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Algebra 1 - 7.6-7.8 Review

Authored by Eric Hoffman

Mathematics

9th Grade

Used 1+ times

Algebra 1 - 7.6-7.8 Review
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20 questions

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1.

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

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A 78 gram sample of Uranium loses half of its mass each year.  What is the exponential equation? 

y=78(0.5)x
y=78(1.5)x
y=78(2)x

3.

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

4.

MULTIPLE CHOICE QUESTION

5 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

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

What relationship is demonstrated by this table of values? EXPLAIN

Linear

Exponential Growth

Neither

Exponential Decay

Linear Growth

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The table represents ...

Linear function, Dividing by 2

Exponential function, Growth, Adding by 50

Exponential function, Decay, Dividing by 2

Exponential function, Decay, Adding 50

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Evaluate the function for the given value:

 y=(14)xy=\left(\frac{1}{4}\right)^x  for x = 4

 1256\frac{1}{256}  

256

 116\frac{1}{16}  

16

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