247139 rounding to the nearest thousand

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}