I need to know this answer before Monday. PLEASE help me out ( worth 20 points )

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).