9.6k views
1 vote
Which sequence represents the wait time arithmetic at the DMV?

Option 1: 1 minute, 1.2 minutes, 1.6 minutes
Option 2: 1 minute, 1.2 minutes, 1.4 minutes
Option 3: 1 minute, 1.2 minutes, 1.8 minutes
Option 4: 1 minute, 1.3 minutes, 1.6 minutes

1 Answer

7 votes

Final answer:

Option 2 is the correct arithmetic sequence representing the DMV wait time, as it shows a consistent increment of 0.2 minutes, forming an arithmetic sequence.

Step-by-step explanation:

The question asks to identify which sequence represents the wait time arithmetic at the DMV. To determine the correct sequence, we need to know if the wait times increase by a consistent amount, which characterizes an arithmetic sequence. An arithmetic sequence has the form:

a, a+d, a+2d, a+3d,...

where a is the first term and d is the common difference between the terms. Looking at the provided sequences, we can calculate the difference between the first two terms:

  • Option 1: 1.2 minutes - 1 minute = 0.2 minutes
  • Option 2: 1.2 minutes - 1 minute = 0.2 minutes
  • Option 3: 1.2 minutes - 1 minute = 0.2 minutes
  • Option 4: 1.3 minutes - 1 minute = 0.3 minutes

To find a sequence with a consistent difference, we need to apply this difference to the second term and see if it matches the third term in the sequence:

  • Option 1: 1.2 minutes + 0.2 minutes = 1.4 minutes (not 1.6)
  • Option 2: 1.2 minutes + 0.2 minutes = 1.4 minutes (matches)
  • Option 3: 1.2 minutes + 0.2 minutes = 1.4 minutes (not 1.8)
  • Option 4: 1.3 minutes + 0.3 minutes = 1.6 minutes (matches but initial increment was different)

Thus, Option 2 is the correct arithmetic sequence that represents the wait time at the DMV because it shows a consistent increase in wait time of 0.2 minutes between each term.

User Rick Hellewell
by
7.8k points