Incorrect Question 1 0 / 2 pts Suppose that the cost, p, of shipping a 3-pound parcel depends on the distance shipped, x, according to the function p(x) depicted in the graph. At what values is the function p not differentiable? 50 - P 40 + Shipping Cost (dollars) 30 20 - 10- 1000 2000 0 3000 4000 * Distance Shipped (miles) 0, 500, 3000 500, 3000 Function is differentiable for all x in the domain 0, 3000