SOLUTION: I'm having problems with this problem. Can someone help? Here's the problem...The average (mean) cost for a service club to publish a directory of its members is given by the rati

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Question 152345This question is from textbook Intermediate Algebra
: I'm having problems with this problem. Can someone help?
Here's the problem...The average (mean) cost for a service club to publish a directory of its members is given by the rational function f(x)=1.15x+700 over x where x is the number of directories printed. Find the average cost per directory for x=1000.
I just can't figure this one out! This question is from textbook Intermediate Algebra

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=%281.15x%2B700%29%2Fx Start with the given function.


f%281000%29=%281.15%281000%29%2B700%29%2F1000 Plug in x=1000


f%281000%29=%281150%2B700%29%2F1000 Multiply


f%281000%29=1850%2F1000 Add


f%281000%29=37%2F20 Reduce


So the solution is f%281000%29=37%2F20 which approximates to f%281000%29=1.85


So average cost per directory is about $1.85