Agas tank contains 5.3 gallons the capacity of the tank is 12.5 gallons how much will it cost to fill the tank at 2.60 per gallon

Can someone me with my hwplz(only the circled ones)

Which of the following is the result of expanding the series

Which lines are parallel? justify your answer. lines p and q are parallel because same side interior angles are congruent. lines p and q are parallel because alternate exterior angles are congruent lines l and m are parallel because same side interior angles are supplementary lines l and m are parallel because alternate interior angles are supplementary.