How do the details about the history of scoliosis treatment in “This Is Spinal Fusion” relate to the memoir’s theme?

They mirror the author’s progression from fear and embarrassment to understanding and hope.

Explanation: The progression of scoliosis treatment shows that understanding the disease helps people deal with it better both physically and psychologically.

our democratic-republican government is based on the idea of the natural right of every individual member thereof to . . a vote in making and executing the laws.

explanation:

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4