Functions In Fantasy Island the individual pays 10% tax on gross annual income not exceeding $200,000. For each dollar on next $300,000 tax is 15%. Any income in excess of this is taxed at 20 cents in dollar. Using T to represent annual tax liability and x gross annual income:
i) Find annual tax liability function T(x) for the income earner in Fantasy Island.
ii) Find tax liability of person who earns the gross annual income of $350,000?
iii) Find tax liability of person who earns gross annual income of $500,000?