Explain why that's your answer.

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

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?

What is the value of x when x + 7 = 21?