Question

Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj?

Answer 1

Jacinda appears to be running 10 minute miles ... 6 mph

after 1 hr, Raj has gone 6 mi
... that's when Jacinda catches him