Part I: Short Answer: (worth 80 points) (1) Factor completely: 3x2 - 48 = 3x -46 = () (2) Factor completely: 3ab - ac + 6b - 2c = (3) Factor completely: x2 + 5x - 36 = (4) Solve for x : x2 - 25 = 0 (two solutions) (5) Find equation of the line passing through points (0,5) and (4, 17) (6) Give the slope of the line 9x + 2y = 36 . (7) What are the two intercepts of the line 9x + 2y = 36 ? (8) What is the slope of the line with x - intercept 9 and y - intercept 2? (9) Find equation of the horizontal line passing through point (-3,-7) (10) Solve for x : 2x - 3y = -7 , 5x+3y=-49