Whats the slope form help pls

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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.

What is the solution set of the quadratic inequality x^2-5< or equal to 0