Pls help this is for a test ill give 20 points

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?

Find the value of x. give reasons to justify your solutions! c ∈ ae

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?