Answer :

Answer:

43.5

Step-by-step explanation:

Michael travels at a unit rate of 43 miles per hour

To find the unit rate of Michael's travel, we need to determine how many miles he travels in one hour.

Given that Michael travels 172 miles in 4 hours,

we use the formula for unit rate: unit rate = total distance / total time.

  1. Total distance = 172 miles
  2. Total time = 4 hours

So, the unit rate calculation is:

unit rate = 172 miles / 4 hours = 43 miles per hour

Therefore, Michael's traveling speed is 43 miles per hour.