You have decided to start a landscaping business in Rogers Arkansas $($you reside in this city$).$ You purchased a used truck for $$9,000.$ and the necessary landscaping tools. During the month of May you charged and collected $$6,000$ for services rendered $($all landscaping jobs were within the city limits of Rogers$).$ Answer the following questions:

What amount of sales tax are you required to pay for the used truck you purchased?

How much sales tax should you have collected for services rendered?