Please help me out with this question

What is the equation of the graph below? y=sec(x)-4

In the 30-60-90 triangle below side s has a length of and side r has a length

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.