Zach watches tv 3 times as much as joel. joel watches tv 2 hours a day. how many hours a day does zach watch tv?

Ineed i been stuck on this question since yesterday

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?

Measure of angles 31 (x+4) (3x+9) me