posted by Anonymous .
what is a unit?
A measure of something.
A foot, a gram, a mile, etc.
Foot, gram, and mile are units.
18. Steve and Carl are driving from Scranton to Bridgeport, a distance of 180 miles. If their speed averages 60 miles an hour, how long will it take them to get there?
a component or assembly of components that performs a specific function