at the end of paragraph 1, the author says, “First, we must develop many different ways of putting the waste from these nuclear and chemical substances in, on, and around the earth.” How does this language shape the reader’s perception of the text ? How to Poison the Earth

At the end of paragraph 1,  when the author says “First, we must develop many different ways of putting the waste from these nuclear and chemical substances in, on, and around the earth” it helps shape the reader's perception of the text as by starting to go into more details and more ideas on poisoning the Earth.

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

what are the choices for abcd