Marley takes a rectangular cake that is 9 inches wide, 13 inches long and 2 inches high. she removes the cake from the pan to frost it. how many square inches of frosting does she need?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.