Three authors team up to write a childrens book. The publisher pays them according to the following contracts
Author - Fixed Rate - Royalty
Patricia $3000 - 1n
Stephan - $1500 - 2n
Harlan - $1000 - 3n
Find a simplified expression that represents the total that the publisher must pay the writing team
Determine the total payout if the book sells
* 200 copies
* 5000 copies