Hey I need help with this problem thanks

Step-by-step explanation:

Terms of a sequence are graphed with "x" values starting at 1 and increasing by 1 for each term. That means you're graphing the points (1, 4), (2, 8), (3, 12), (4, 16).

You will find the points lie on a straight line. That means the sequence is arithmetic.

The common difference is found by taking the difference of any pair of adjacent terms of an arithmetic sequence:

  8 -4 = 4

  12 -8 = 4

  16 -12 = 4

The common difference is 4.

The median will be 66.

Step-by-step explanation:

The median is defined as the middle value which separates the higher half from the lower half of any given data sample.

The given set here is : 66, 51, 77, 68, 60, 75, 54, 80, 29, 64, 66, 67

To find the median, first we will arrange the given numbers in ascending order.

29, 51, 54, 60, 64, 66, 66, 67, 68, 75, 77, 80

So, the median will be

Hence, the median is 66.