She’s doughnut shop has a special deal. the first dozen doughnuts cost $2.75. for every doughnut after the price is $0.20. which formula best describes the cost c in dollars for d doughnuts?

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.