Two sprinters, Christopher and Nick, want to find out who has the faster time when compared to each of their teams. Christopher has a time of 10.8 seconds, and his team has a mean time of 11.5 seconds and a standard deviation of 0.4
seconds. Nick has a time of 11.1 seconds, and his team has a mean of 11.6 seconds and a standard deviation of 0.2
seconds. Who has the faster time when compared to each of their teams?

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?