Need help with these two questions

6. [-/4 Points] DETAILS MY NOTES Evaluate the limit by using the graph of the function. The "plot" command in Maple may be used in this exercise. lim x2 - 3x - 18 X - 6 X - 6 lim X2 - 3x - 18 x - 6 X - 6 7. [-/6 Points] DETAILS MY NOTES The position of a ship traveling due east along a straight line is s(t) = 14t + 7. In this example, time t is measured in hours and position s is measured in nautical miles. We will take s = 0 to be the port of Wilmington, NC and the positive direction to be east. How far east of Wilmington is the ship and how fast is it going after one hour, that is, when t = 1? After one hour, the ship is nautical miles east of Wilmington, with an instantaneous speed of knots (nautical miles per hour). Submit