help me please :)

Joyce

New member
Joined
Feb 16, 2006
Messages
26
O.k I already posted two questions but I figured out one of them. The other one i'm still not sure!

The arithmetic sequence 200, 185, 170,......is given. What is the first negative term of the sequence? Explain.

So far i got

a= 200

r= -15

tn= 200+(n-1)-15
 
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