Which equation represents twenty-nine is one-third of the number n?

one third equals n over 29
29 equals n over 3
29 = 3n
3 = 29n

During a sleepover, Carissa played karaoke with her friends. Her song was 6 minutes long. She had already sung for 4 minutes. Which equation could be used to see how much longer she will have to sing?

x + 2 = 6
x + 4 = 10
x + 4 = 6
x − 4 = 6

Dontavious has a box of colored pencils. He uses 53 pencils and has 118 pencils left in the box. Write an equation showing how many pencils are in the box before he starts drawing.

53 + p = 118
118 + p = 53
p − 53 = 118
p = 118 − 53

Julia has a square poster of a puppy on her bedroom wall. The width is one-fourth the length of the picture. If the width is 24 inches, write and solve an equation to determine the length.

L over 4 equals 24; L = 96 inches
4L = 24; L = 6 inches
4 + L = 24; L = 20 inches
L − 4 = 24; L = 28 inches