I need help can anyone help me on this pls?

1. preform the indicated operation. then estimate to see whether the proposed result is reasonable. 811.1 - 8.039 803.071 803.061 803.161 831.061 2. the ordered pair (1, 2) lies in which quadrant? quadrant ii quadrant iv quadrant iii quadrant i 3. sean tries to drink 3 liters of water every day how my millimeters of water does he drink in a day? 0.3 ml 0.003 ml 3,000 ml 30 ml 4. find the least common multiple. (lcm). 10, 36 5 180 20 360

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2