In a group discussion,
-facts are more important than opinions.
-there should be a large number of facts.
-facts and opinions should be balanced
-there should be more opinions than facts

Facts and opinions should be balanced

Explanation: Depending on the group assignment, there would be more facts than opinions but it would still be balanced. Opinions give ideas to the project while facts say what the limits are.

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

the answer is b just took the tested