In a certain country income tax T in dollars is assessed acc

In a certain country, income tax T (in dollars) is assessed according to the following function of income x: T(x) = {0 if 0 lessthanorequalto x lessthanorequalto 10,000 0.03x if 10,000 lessthanorequalto x lessthanorequalto 20,000 600 + 0.17x if 20,000

Solution

T(5000) = 0

and T(12000) = 0.3*12000 = 3600

T(25000) = 600+0.17*25000 = 4850