Find the variance of the probability density function to the nearest hundredth.f(x) = 
; [3, 6]
A. 0
B. 0.75
C. 1.89
D. 0.38
Answer: B
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Solve the problem.Ron and Kathy are ticket-sellers at their class play. Ron is selling student tickets for $4.00 each, and Kathy selling adult tickets for $6.50 each. If their total income for 29 tickets was $166.00, how many tickets did Ron sell?
A. 25 tickets B. 20 tickets C. 11 tickets D. 9 tickets
The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells binoculars. Use the information in the figure to answer the question.
Fewer than how many binoculars must be produced and sold for the company to have a profit loss?
A. 1500 binoculars B. 2700 binoculars C. 750 binoculars D. 2250 binoculars
Write the complex conjugate of z in polar form with argument ? between 0 and 2?.  figure 1.png)
What will be an ideal response?
Simplify.
A. -12x2
B. 12
C. 12x2
D. 12x