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The yearly profits of a company are shown in the table.

Which answer describes the average rate of change from Year 2 to Year 4?

 

Year           Profits (thousands $)

1                127.5

2                238.4

3                156.7

4                217.2

5                293.4

 

  • Profits increased by an average of $21,600 per year from Year 2 to Year 4.
  • Profits increased by an average of $10,600 per year from Year 2 to Year 4.
  • Profits decreased by an average of $10,600 per year from Year 2 to Year 4.
  • Profits decreased by an average of $21,600 per year from Year 2 to Year 4.
 Feb 7, 2018
 #1
avatar+100571 
+2

The average rate of change is given by :

 

[  217.2   - 238. 4 ]  /  [ 4 - 2 ]  =

 

[ -21.2 ]  /  2  =

 

-10.6    ⇒  Profits decreased by an average of $10,600 per year from Year 2 to Year 4

 

 

cool cool cool

 Feb 7, 2018

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