Answer: C
Step-by-step explanation: all real numbers can solve this problem
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Hello! remember you have to write complete questions in order to get good and exact answers. Here I'll explain this in a general way assuming the following table:

As you can see, x increases in steps of 1 units. So let's check the difference in y:

So we have a constant difference and we can conclude the table represents a line. Since the line passes through then y is directly proportional to x, so we can write:

Then:

Finally, the equation of the line is:

The 3rd set, no x or y numbers are repeated.
the board would be 4.85 feet