Yes, it is.
$17 for every hour.
The unit rate of 13 dollars for 4 pounds is 3.25 dollars per pound.
45mls/hour
Usually (distance unit) per (time unit) per (second time unit). EX: miles per hour per minute.
Yes, it is.
Yes, although it does not specify 15 WHAT per hour. [Run] 15 miles per hour or [make] 15 dollars per hour or [manufacture] 15 widgets an hour. To that extent, it is not a unit rate.
$17 for every hour.
The unit rate of 13 dollars for 4 pounds is 3.25 dollars per pound.
45mls/hour
A rate is a ratio of two quantities: miles per hour, calories per cookie, dollars per person, ... a unit rate just specifies the units (miles, hours) of the two quantities.
360 ÷ 6 = 60 miles per hour is the unit rate
$312.50 per 25 hours
Yes.
A unit rate is simply how we describe speed in this case. Examples: Miles per hour Kilometers per hour Feet per second Meters per second and so on.
48 for 8 hours as a unit rate is 6 per hour.
Usually (distance unit) per (time unit) per (second time unit). EX: miles per hour per minute.