Which answer correctly estimates the product of 3.09 × 304.87? a. about 9.0 b. about 9.9 c. about 90 d. about 900

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?