hello, i need help with this. Write a function f(x) with the data below. The Income column beign x and the contribution to pay being y.

Income Contribution (To pay) Less than 12,000 0% More than 12,000 but 10% if is more than less than 30,000 12,000 More than 30,000 $2,000 + 21% of the but less than 52,500 30,000 excess More than 52,500 $4,680 + 32% of but less than 78,000 the 52,500 excess More than 78,000 $6,680 + 38% of the 78,000 excess