+0  
 
+1
153
1
avatar+28 

What is the recursive rule for the sequence?

−7.4, −21.2, −35, −48.8, −62.6, ...

 

A.) an=an+1+13.8 , where a1=−7.4

B.) an=an−1+13.8 , where a1=−7.4

C.) an=an−1−13.8 , where a1=−7.4

D.) an=an+1−13.8 , where a1=−7.4

 May 1, 2019
 #1
avatar+106539 
+2

The common difference is  -21.2 - (-7.4)  = -13.8

 

So

 

an = an-1 - 13.8, where a1  = - 7.4

 

 

cool cool cool

 May 1, 2019

21 Online Users

avatar
avatar