$8 per hour a raise of $1.20 a hour what is the percent increase

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Simplify the expression 10/11(22z) + (a+5) -1

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.