Posted by **Stephanie** on Sunday, October 16, 2011 at 3:29pm.

rent-4-wheels makes a profit of $12 per day for each car rented, and loses $4 per day for each car that is not rented. How many cars should the company have on hand to maximize profit, subject to the following probability distribution:

anticipated number of rental requests

12 11 10 9 8 7 6

Probability

.09 .011 .22 .24 .12 .12 .10

This is what I did and I;m not sure if it's correct.

(12)(.09)+(4)(.91)=4.72

(11)(.11)+(4)(.89)=4.77

ect. i got that company should have ten cars to maximize profit