Hildy had 2.5 oz of liquid for a science experiment. the instructions said that the experiment needed 3 oz of liquid. she went to the cabinet and got an additional 7.5 oz of liquid. did hildy get a reasonable amount of liquid out of the cabinet?
a. yes, hildy got a reasonable amount of liquid because she needed a total of 7.5 oz (2.5 × 3 = 7.5).
b. no, hildy did not get a reasonable amount of liquid because she only needed 0.5 oz (3 – 2.5 = 0.5).
c. no, hildy did not get a reasonable amount of liquid because she only needed 5.5 oz (3 2.5 = 5.5).

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