What is the length of the radius of a circle with a center at the origin and a point on the circle at 8 + 15i?

What is the measure of angle afe? 79 81 91 99

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.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?