Linear programming using graphing calculator

[safaulk]

My daughter needs serious help with Linear Programming using Graphing Calculator. She has a problem she has been trying to solve for over a month, I have tried to help her and searched endlessly for help. Hopefully, the link below works. Everything comes up fine except for the very last part. We keep getting either an Error message or 137 instead of 78, as the problem shows. Thanks in advance for any help you can provide.


https://www.dropbox.com/s/xjq0i38dz8j6jeh/Photo Nov 16, 1 05 11 PM.jpg

 

[JeffM]

My daughter needs serious help with Linear Programming using Graphing Calculator. She has a problem she has been trying to solve for over a month, I have tried to help her and searched endlessly for help. Hopefully, the link below works. Everything comes up fine except for the very last part. We keep getting either an Error message or 137 instead of 78, as the problem shows. Thanks in advance for any help you can provide.


https://www.dropbox.com/s/xjq0i38dz8j6jeh/Photo Nov 16, 1 05 11 PM.jpg

Many of us are reluctant to go flying off to unknown websites.

Please ask your daughter to write out the problem EXACTLY and COMPLETELY on this site and tell us what she has tried so that we can pinpoint where she is having difficulties.