Idon't know if these words are right and i don't know what the fourth one down is

elise is writing a literary analysis of a biographical essay about emily dickinson.

which of the following should elise use in order to provide a strong claim statement in the introduction to her analysis?

a.  

“a life apart” by julia golding maintains that emily dickenson wrote over a thousand poems during her life.

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