Effect of Price on Supply of Tires Suppose the quantityr x of Super Titan radial tires made available each week in the marketplace is related to the unitseliing price by the following equation where X is measured in units of a thousand and p is in dollars. 12 *X :48 p 2 How fast is the weekly suppiy of Super Titan radial tires being introduced into the marketpiace when x : 9, p : 88.5, and the priceftire is decreasing at the rate of $6i'week? [Round your answer to the nearest whole number.) Distance Between Two Ships Two ships leave the same port at noon. Ship A sails north at 22 mph, and ship B sails east at 13 mph. How fast is the distance between them changing at 1 p.n'|.? (Round your answer to one decimal place.) :2 Distance Between Two Cars A car leaves an intersection traveling west. Its position 4 sec later is 21 ft from the intersection. At the same time, another car leaves the same intersection heading north so that its position 4 sec later is 27 ft from the intersection. If the speeds of the cars at that instant of time are 7 ft/sec and 14 ft/sec, respectively, find the rate at which the distance between the two cars is changing. (Round your answer to one decimal place.) ft/s Enter a number