Read the sentence. from a prior scene, the audience knew that the lead was hysterical because of the contemptible villain. suffixes a reader understand the meanings of words. which words in the sentence have suffixes? check all that apply

First of all, you need to know what a suffix is. It is an addition that you basically glue onto a word - you have the basic form of a word (for example, play), and then you add the suffix at the end (-ing), and you get a new word (playing).
Having this in mind, there are two correct options here: hysterical (derived from hysteric + suffix -al), and contemptible (derived from contempt + suffix -ible). 

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

answer: x = 4 and y = 4