Please help! Anyone.?

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

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.