Final answer:
The unit rate of minutes per copy for a machine that makes 120 copies per minute is approximately 0.0083 minutes per copy.
Step-by-step explanation:
The student is asking for the unit rate of minutes per copy when a copy machine can make 120 copies per minute. To find the unit rate, we need to calculate how many minutes it takes to make one copy. Since the machine makes 120 copies in one minute, we take the reciprocal of this rate to find the time taken for one copy. Thus, we divide 1 minute by 120 copies.
1 minute / 120 copies = 0.0083 minutes per copy.
This means that the machine takes approximately 0.0083 minutes to make one copy. This unit rate helps in understanding the efficiency of the copy machine and is important for tasks such as scheduling and cost estimation associated with using the machine.