The graph of the constant speed of a rider on a train is shown on the plane

Answer this question! 30 points and brainliest!

Which of the following is true for the relation f(x)=2x^2+1

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?