If your monthly net (after-tax) income is $1,500, what should be your maximum amount spent on credit payments? a. $200 b. $300 c. $400 d. $500

There are rules for personal finance, and one of them may tell you a recommended limit to credit card payments when your net monthly income is a certain amount.  As such, this is not really a math question, but one in personal finance / economics.  Reread the original question and the instructional material that preceeds it and look for "max payments" guidelines.

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania