Acatering service offers 7 appetizers, 3 main courses, and 5 desserts. a customer is to select 4 appetizers, 2 main courses, and 4 desserts for a banquet. in how many ways can this be done?

15 point ! ~ see if you know the answer to both you!

I'll give brainliest if you answer right : )

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes