When grilling steaks, Washington likes to keep the grill temperature at 425°, plus or minus 15°. Within what range of temperatures does Washington like the grill to be when
he cooks his steaks?

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.