If BC measures 8 in the approximate area of circle B is square inches

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

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.