What is the square root of 49

Place the following steps in order to complete the square and solve the quadratic equation,

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

Which of the following represents the range of the graph of f(x) below