21 22 23 24 TIME 25 A large hotel has five elevators. On any given day, there is an 8% chance that one elevator is broken The ele operate independently of one another. The Robertsons are staying in this hotel for five days. Let X represent number of days one elevator is broken during their stay. What are the mean and standard deviation of X? x=0.4,0 = 0.074 O x = 0.4.0,=0.61 x = 2.5, 0, = 1.92 Owx = 4.0,= 0.89 ​

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.