Percy delivers pizzas for pizza king. he is paid $6 an hour plus $2.50 for each pizza he delivers. percy earned $280 last week. if he worked a total of 30 hours, how many pizzas did he deliver?

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)