Hi,

I'm trying to solve for the following optimization problem:

I'm hoping that someone can confirm with me whether or not my calculations are right:

The answer according to the textbook is $1100 or $1125. I was able to get the answer of of $1125, but I have no clue where the alternative answer of $1100 came from. Can someone help? Can someone also confirm the domain restriction for this question? I just said that x had to be greater than 0, but I feel like I may not be entirely correct.

Hope someone can help!

- Olivia