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The winning times for a race are shown in the table. Which answer describes the average rate of change from year 2 to year 4?
 
A) The winning time increased by an average of 0.475 second per year from year 2 to year 4.




B) The winning time increased by an average of 0.267 second per year from year 2 to year 4.




C) The winning time increased by an average of 0.8 second per year from year 2 to year 4.




D) The winning time increased by an average of 0.4 second per year from year 2 to year 4.
 

 

Link to a picture of the function table: https://imgur.com/a/eYyT8

 

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Thanks to anyone who helps.

Jaleco  Feb 28, 2018
edited by Jaleco  Feb 28, 2018
edited by Jaleco  Feb 28, 2018

Best Answer 

 #1
avatar+12756 
+2

Year 2      28.4

Year 4      29.2      29.2-28.4 = .8

 

 

the winning time increased by  .8 sec/2 yr = .4 sec per year

 

A No

B  No

C No

d  Yes  

ElectricPavlov  Feb 28, 2018
 #1
avatar+12756 
+2
Best Answer

Year 2      28.4

Year 4      29.2      29.2-28.4 = .8

 

 

the winning time increased by  .8 sec/2 yr = .4 sec per year

 

A No

B  No

C No

d  Yes  

ElectricPavlov  Feb 28, 2018

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