The answer is 12+3r because 4 times 3=12 then the 3r which you cannot add because they are no others variables that are r
The ship therefore travels 8 nautical miles per hour. If the ship traveled for 1 hour, then it traveled 8 nautical miles. If the ship ... If the ship traveled for 18 hours, then it traveled 144 nautical miles.
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Mentally, they are numbers in which you can do mental math with since they are whole numbers
Answer:
5
Step-by-step explanation:
