Plz hurry Which sentence has a vague pronoun error?

A) Everyone knows the way to get to Kansas City.
B) Eric was always late for class, and it drove his teacher crazy.
C) This massive amount of homework is too much for a sixth-grader.
D) All of the tables in the cafeteria had been turned over by them.

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

7

explanation:

it depends on what grade.

kindergarten to senior year in high school will go for about 7 hours. pre-k will go for bout 4-5 hours. college, it depends on your classes.

2. list two reasons why fossil fuels should no longer be used as a source of energy in america.

i believe it is the bright red satin shirt.