Which sentence most needs to be revised because its description is too vague? we hiked two miles uphill in the blooming forest today. we sprinted back and forth in the stuffy high school gym. we had to walk up several flights of stairs to get there. we stretched and then slowly jogged once around the track.

The sentence that needs revising because its description is too vague is "We had to walk up several flights of stairs to get there."

Explanation:

The sentence above can be considered vague due to more than one reason. First, we are not told how many flights of stairs the speaker had to climb to get somewhere. "Several" means there were more than two flights of stairs, but not too many. In addition, we are not told where the speaker was going to when he/she and the others were climbing the stairs. The sentence, is thus, quite vague.

fond of fighting is the answer

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