Solve the system of equations. If the system has an infinite number of solutions, express them in terms of the variable t. 17x - 3y+ 20z 4x 4x - - x = y II Z = -100 3y + 7z = -35 +5z = -25 Solve the system of equations. If the system has an infinite number of solutions, express them in terms of the variable t. -11x + 2y + 59z = 45 = 40 4x - - 22z = -15 -16x8y + 96z x = y = Z = For the three points (1, 19), (2, 18 ) and ( -1, 17), find a quadratic model y = ax + bx + c through the points. Round your answers to one decimal as needed. 100 a II b = C =