Final answer:
Janet drove 292 km, and the trip took 4 hr, Janet was traveling at an average rate of 73 km/h.
Step-by-step explanation:
To find the average rate at which Janet was traveling, we can use the formula:
Average Rate = Distance / Time
Given that Janet drove 292 km and the trip took 4 hours, we can substitute these values into the formula:
Average Rate = 292 km / 4 hr = 73 km/h
Therefore, Janet was traveling at an average rate of 73 km/h.