19. THE SHARK PROBLEM You can swim at the rate of 20 meters per minute. A shark can swim at the rate of 65 meters per minute. You are swimming off shore and observe a shark in the water near you. You immediately start swimming towards shore. The shark starts swimming towards the same point on the shore, a distance of 150 meters for the shark. a. If your distance to the shore is 45 meters, how long will it take you to reach the shore? How long will it take the shark? Do you survive? b. Write a linear inequality to determine the "safe" distance from shore for the swimmer. Solve your inequality for your "safe" distance from shore and graph the solution on a number line. 150 m SURF'S UP

mile due west of a street intersection. Another car is located 8. mile 4. A police car is at rest and is located north of the intersection and is traveling at a speed of 40 miles per hour (mph) due south toward the intersection. At that instant, the radar in the police car records the rate at which the distance between the two cars is changing. What speed is recorded by the radar? 35.8 mph 38.8 mph 41.2 mph 44.2 mph 53.7 mph 0 0

A boat, which moves at 17 miles per hour in water without a current, goes 273 miles upstream and 273 miles back again in 34 hours. Find the speed of the current to the nearest tenth. The speed of the current is Enter DNE for Does Not Exist, oo for Infinity (Work area) Distance Rate Time Upstream Downstream Total Question Help: Message instructor Submit Question miles per hour.