The tax is 6.5% OF the listed price. "OF" in math means multiply.
First convert the percentage to a decimal
6.5% = .065
Then multiply .065*813.95 = 52.90675. This is the tax.
Simply add the tax onto the cost
813.95 + 52.90675 = $866.86 (rounded)

Total amount of Brian paid is $48.30.
Hope this helps. - M
The center of the circle is (5,3)
(-5, 3) (-2, 6) (-4, -2)
those will be your answers