A man drives for 4 hours at a speed of 75 km per hour.

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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?

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6