Which of these sentences uses correct parallel structure?
after school, sheila either walks home or is taking a bus.
every evening, jenny does her homework and then took her dog for a walk.
on the airplane, shane read a book, watched a movie, and was playing his favorite music.
before starting college, jake learned how to speak spanish and traveled across south america.

x=4, y=4

step-by-step explanation:

y=2x-4;

x+2y=12

we can use substitution since the first equation is solved for y

where ever you see y in the second equation, replace it with 2x-4

x + 2(2x-4) = 12

distribute the 2

x+4x-8 = 12

combine like terms

5x-8=12

add 8 to each side

5x-8+8=12+8

5x=20

divide by 5

5x/5 = 20/5

x =4

we still need to solve for y

y = 2x-4

we know x =4

y = 2(4) -4

y = 8-4

y=4

hello, i am papaguy your answer is ready.

answer: the pronoun that is used in the given subject above is the word "himself" which refers to the noun or antecedent "maestro". the pronoun is an example of an intensive pronoun. intensive pronouns are used to add emphasis to the subject of the sentence and it uses reflexive pronouns such as myself, yourself, himself, herself, themselves and ourselves. 

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your pal papaguy