9. [I1 Points] Math 110 Course Resources - Implicit Differentiaion & Related Rates Course Packet on related rates The weekly demand equation is given by p + x + Sxp = 83, where x is the number of thousands of unis demanded weekly and p is in dollars. If the price p is decreasing at a rate of 78 cents per week when the level of demand is 3000 units, then demand is decreasing ' increasing at units per week