In a hypothetical economy, Brian earns $14,000, Crystal earns $28,000, and Edison earns $42,000 in annual income. The following table shows the annual taxable income and tax liability for these three single individuals. For example, Brian, who earns $14,000, owes $1,540 in taxes.

Use the tax liability figures provided to complete the following table by computing the average tax rate for Brian, Crystal, and Edison with an annual income of $14,000, $28,000, and $42,000, respectively

Average Tax Rate for Brian, Crystal, and Edison ?

The income tax system for this country is ------?