Simplify the following by combining like terms:

1y - 8xy + 7x - 5y + 4xy + 9x

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

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd