If I have a A+ in a class and get a bad score on a quiz that's worth 10% of my grade, would my grade go down a letter grade or a few points

The only way you'd go down a whole letter grade is if you scored 0 points

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

athena gives perseus a mirror sp he won't directly look back at her.