Which operation should be performed first according to the order of operations?

117 + 45 – 34 • 8 + 36 ÷ 12 – 12

a.
34 • 8

b.
36 ÷ 12

c.
117 + 45

d.
45 – 34

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Ineed with number 6 , explain how to get 1978

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