Determine whether the following is a probability model.
A. Yes
B. No
Answer: A
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Solve the problem.Amy's little brother Jimmy has eaten 40% of a chocolate cake. Amy, Brad, and Cecilia wish to equally divide the remainder of the cake. What percentage of the original cake would be considered a fair share to each?
A. 10%
B. 20%
C. 60%
D. 33
%
E. none of these
A manufacturer finds that the revenue generated by selling x units of a certain commodity is given by the function, R(x) = 40x-0.20x² where the revenue R x( ) is measured in dollars. What is the maximum revenue, and how many units should be manufactured to obtain this maximum?
What will be an ideal response?
Many bacteria strains are used by the dairy industry to produce different types of fermented milks and yogurts. During a fermentation experiment, the population y (in millions per mL) of bacteria Lactobacillus fermentum after t hours in a wheat medium satisfied the differential equation 
Initially, 10 million bacteria per mL were present.
(a) Determine the number of bacteria per mL after 4 hr. (b) Determine when 100 million bacterial per mL will be present.
An observer for a radar station is located at the origin of a coordinate system. For the point given, find the bearing of an airplane located at that point. Express the bearing using both methods.(-7, 7)
A. 225°; S 45° E B. 315°; S 45° E C. 315°; N 45° W D. 225°; N 45° W