Toru takes his dog to be groomed. the fee to groom the dog is $75 plus 6.75% tax. is $80 enough to pay for the service? explain.

For this we need to work out what 6.75% of 75 is:

6.75% = 27/400

27/400 * 75 = 2025/400 = 405/80 = 81/16

81/16 = $5.06

If you add this to the $75 you get an answer of $80.06 which is 6¢