Joana is a permanent resident of Australia. She was born in Mexico and keeps her Mexican citizenship. Joana spends most of the year working off the coast of Malaysia on an oil rig for a United States company. She was recruited for this job in Australia and signed a contract with the company in Sydney. For the last five years, Joanas husband has lived in Australia with their two children. They purchased a home in Australia two years ago. Joana and his husband have a joint account with Commonwealth Bank. Joanas salary is paid directly into this account. All of the familys other investments, including a share portfolio that generates dividend income, remain in Mexico. Joana gets one month off from work every second month and, on these occasions, she meets with her family either in Australia or on holidays in America (usually in Mexico, where her parents reside). Discuss whether Joana is a resident of Australia and how her salary and investment income would be taxed.