21. reynaldo is on the beach playing catch with his dog, rex ruthor. when reynaldo tosses the ball into the
water, rex races down the shore, then dives into the water and swims to the ball. rex can run 10 feet per
second and swim 2 feet per second. reynaldo tosses the ball into the water so that it lands 6 feet from the
shore and 38 feet along the shoreline. if it takes rex a total of 8 seconds to get to the ball, how far along
the shore did he run before diving in?
38 feet