Which expression represents the total cost for Mrs. Alvarez to rent skis for s days and for p days

1/800 is the right answer

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours