Which set of ordered pairs does not represent a function? (4, 8), (-4, -5), (-9, -4), (-6, 8)\}{(4,8),(−4,−5),(−9,−4),(−6,8)} \{(0, 0), (5, 8), (-3, 7), (-3, -2)\}{(0,0),(5,8),(−3,7),(−3,−2)} \{(-9, 8), (-4, -3), (2, -2), (3, -2)\}{(−9,8),(−4,−3),(2,−2),(3,−2)} \{(4, 0), (9, 6), (-5, 0), (5, -1)\}{(4,0),(9,6),(−5,0),(5,−1)}

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

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