Please help!!! I don’t know the answer

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?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

How does reflecting or rotating a figure change the interior angles of the figure?