Determine the unit rate of a marathon runner who travels 5/2 miles in 1/4 hour

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

i just took the test, the correct answer is .. 31.5 in.