rules for exponents. A must know for calculus. If you dont know these, right answers will be out of your reach. Remember those stupid algebra classes? now that you are taking calc they arent so stupid now.
Subjects and verbs must agree in number. This is the cornerstone rule that forms the background of the concept. The dog growls when he is angry. The dogs growl when they are angry. Don’t get confused by the words that come between the subject and verb