Which is a graph of a proportional relationship?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12