What is the product of 2 3/8 and 2/3

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

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?

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?