Which of the following are based on an ability to pay? Explain.
a. State Y collects a sales tax of 5% on all purchases of goods and services.
b. State X collects a sales tax of 5% on all purchases of goods and services but gives low-income families a tax credit for sales taxes.
c. Students at State University are given free parking in designated lots. Faculty and staff members must pay $125 per year for parking at State University.
d. Barton City charges all customers a flat monthly rate of $10 for garbage pickup.