Angle q and angle k are same side interior angles because they are both on the inside of the transversal, and they are both on the same side, on the left of the transversal.
Angle r & angle t are same side interior angles because they are both on the inside of the transversal, and they are both on the same side, on the right of the transversal.
15r means that she burns 15 calories per min, for as many mins as she ran. EG: if she ran for 10 min, then she burned 150 cals. The other one I'm not so sure.