SOLUTION: what is the cost c of a telegram of 18 words is the cost f of the first 10 words plus the cost a of each additional word.
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Question 349031:  what is the cost c of a telegram of 18 words is the cost f of the first 10 words plus the cost a of each additional word. 
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
 The first ten words cost .
There are  eight words remaining. 
The cost of the remaining  words is .
So the total cost, , is
 
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