Deductions & credits

a. Yes and Brazil. 
b. The plan is 90 days working with a few weeks traveling. There is a possibility it’ll extend to 6 months in theory. 
c. My US based employer will reimburse my flight only partially with receipt I believe, and will pay a stipend for housing and car rental on paychecks deducted directly as non taxable income. 


Thanks for your help!