Mr. Rodriguez plans to drive from New York to Chicago, a distance of 850 miles. How long will he take to make the trip if he averages 50 miles per hour?

  17 hours

Step-by-step explanation:

time = distance/speed

  = (850 mi)/(50 mi/h) = 850/50 h = 17 h

He will take 17 hours to make the trip.

b

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870