Name: 
 

Exponential growth & Decay



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

A colony of ants has an initial population of 200 and doubles every day. A function that can be used to model the ant population, p, after t days is
a.
mc001-1.jpg
c.
mc001-3.jpg
b.
mc001-2.jpg
d.
mc001-4.jpg
 

 2. 

A bacteria colony initially has 4000 cells and triples every week. A function that can be used to model the population, p, of the colony after t days is
a.
mc002-1.jpg
c.
mc002-3.jpg
b.
mc002-2.jpg
d.
mc002-4.jpg
 

 3. 

A series of shapes are constructed from blocks. The first shape is made from 3 blocks. Each successive shape is made using twice as many blocks as the previous shape. The total number of blocks required for the first 4 shapes is
a.
24 blocks
c.
42 blocks
b.
36 blocks
d.
45 blocks
 

 4. 

Mohamed purchased a car for $30 000. It depreciates by 25% of its current value every year. How much will the car be worth 3 years after it is purchased?
a.
$12 656.25
c.
$16 875
b.
$71 111.11
d.
$22 500
 

 5. 

The equation mc005-1.jpg can also be written as
a.
mc005-2.jpg
c.
mc005-4.jpg
b.
mc005-3.jpg
d.
mc005-5.jpg
 



 
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