For number 2: first take 25% off of 79.99 to get (79.99*.75) = $59.99. Now the tax is applied: (59.99*.95)= $56.99. So Chase’s haircut costs $56.99. For number 3: No, it is not the same. Taking 40% off $10 is $6. If you do 10% off, AND THEN 30% off, it is 30% off of $9, which is $6.30. So it is not as much of a discount for 10% and then 30%.