Consider the graph shown in the gure, which gives the velocity of an object moving along a line, Assume time is a. On what intervals is the object moving in the positive direction? measured in hours and distance is measured in miles. The areas of three regions bounded by the velocity curve and the 7 t-axis are also given. Complete parts (a) through (e). The object is moving in the positive direction when its velocity is V Select the correct choice below and, if necessary, ll in the answer box to complete your choice. O A- The object is moving in the positive direction on the interval(s) . (Type your answer in interval nomtion. Use a comma to separate answers as needed.) O B. The object is never moving in the positive direction, b. Use the values shown in the graph to set up an expression that gives the displacement of the object over the interval [0,9]. Ignoring units, the expression gives the displacement of the object over [0,9]. (Use integers or fractions for any numbers in the expression. Do not perform the calculation.) The displacement of the object over the interval [0,9] is c. Use the values shown in the graph to set up an expression that gives the total distance traveled by the object over the interval [3,15]. Ignoring units, the expression gives the total distance traveled by the object over the interval [3,15]. (Use integers or fractions for any numbers in the expression. Do not perform the calculation.) Over the interval [3,15], the object travels a total distance of 'V d. Use the values shown in the graph to set up an expression that gives the displacement of the object over the interval [0,15]. Ignoring units, the expression gives the displacement of the object over [0,15]. (Use integers or fractions for any numbers in the expression. Do not perform the calculation.) The displacement of the object over the interval [0,15] is 'V e. Describe the position of the object relative to its initial position after 15 hours