Can pls someone help me with my homework

What is x3+3x2−16x−48 divided by x−1?

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?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10