Find the common ratio r of the geometric series an that satisfies the following conditions: c = -4, S = 16.

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.

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Factor the polynomial expression x6 – x3 – 20