please answer the question

In a hypothetical economy, Paolo earns $17,000, Sharon earns $34,000, and Van earns $51,000 in annual income. The following table shows the annual taxable income and tax liability for these three single individuals. For example, Paolo, who earns $17,000, owes $2,720 in taxes. Use the tax liability gures provided to complete the following table by computing the average tax rate for Paolo, Sharon, and Van with an annual income of $1 7, 000, $34,000, and $51,000, respectively. Taxable Income Tax Liability Average Tax Rate Taxable Income (Dollars) (Dollars) (Percent) Paolo 17,000 2,720 Sharon 34,000 5,440 Van 51,000 8,160 The income tax system for this country is v . Taxable Income (Dollars) Paolo 17,000 progressive Sharon 34,000 proportional Van 51,000 regressive The income tax system for this country is