13, because 442/34 is 13 meaning each person sold an equal amount
No, since it a repeating(terminating) decimal, so it is not a rational number.
You're very close. However, the less steep line should go through (4,7) and not some point slightly above that location. Also, the shaded region should be above both dashed lines at the same time. So you won't include the portion that I've marked in blue (see attached). Other than that, it looks great.
Answer:
what does that even mean'
Step-by-step explanation: