What is the meaning of the point with an x-coordinate of 2?

What is the definition of exponential decay?

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.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2