Is a sprint times of 8 seconds unusually slow

Suppose that you have bought a total of 3200 shares of stock of a particular company. You bought 1200 shares of stock at $17 per share, 700 shares of stock at $10 per share, and the remaining shares at $23 per share. What is the average price you paid per share of stock? (please round your answer to 2 decimal places)

The half-life of oxygen-22 is 2.25 seconds. If there is 8 liters of oxygen-22, how long will it take until only until 1 liter remains?

A person invested $7,400 in an account growing at a rate allowing the money to double every 6 years. How much money would be in the account after 4 years, to the nearest dollar?

India has average precipitation of 1083 mm per year. On a random week in India, what is the expected rainfall as measured in inches per week? Use your E(aX+b) formula, and the fact that 1 mm is equal to 0.0393701 inches, and there are 52.1429 weeks in a year. (Round your answers to two decimal places; ex: 1.23).   The United Arab Emirates has average precipitation of 78 mm per year. On a random week in United Arab Emirates, what is the expected rainfall as measured in inches per week? Use your E(aX) formula, and the fact that 1 mm is equal to 0.0393701 inches, and there are 52.1429 weeks in a year. (Round your answers to two decimal places; ex: 1.23).   Panama has average precipitation of 2928 mm per year. On a random week in Panama, what is the expected rainfall as measured in inches per week? Use your E(aX+b) formula, and the fact that 1 mm is equal to 0.0393701 inches, and there are 52.1429 weeks in a year. (Round your answers to two decimal places; ex: 1.23).   The United States…