B. Piecewise Function:
1. In a certain country, income tax is assessed by using the function below. Where f(x) is the percentage
of the income that must be paid as tax, and x is the amount of income.
0
if x < $15,000
f(x) = 12% if $15,000<x< $30,000
18%
if <> $30,000
a. If your income is Php30, 000, what amount of tax will you pay?
b. If your income is Php13,800, what amount of tax will you pay?
C.
Your income last year was Php25,000 and your friend's income was Php32,000. How much more
did your friend pay in taxes than you?​