Answer in mixed numbers if possible

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. what distance from city a is the point where the truck and the car will meet?

Write the expression 7x^3-28xy^2 as the product of 3 factors

Twelve less than a number is at most 20