Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20
B. 100
C. 10
D. 500
Answer: C
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Solve the system by substitution. If the system is inconsistent or dependent, say so.
A. (6, 5) B. (5, 0) C. (-5, -1) D. empty set solution; inconsistent system
Solve the problem.A display in the shape of a basketball has a volume of 301 cubic yards. Find the volume of the display that results by uniformly scaling the figure by a factor of 5. Use the fact that when you uniformly stretch or shrink a three-dimensional object in every direction by a factor of a, the volume of the resulting figure is scaled by a factor of a3.
A. 7525 yd3 B. 27,270,901 yd3 C. 4515 yd3 D. 37,625 yd3
Let U = {all soda pops}; A = {all diet soda pops}; 
and 
Describe the given set in words.(A ? D) ? C'
A. All soda pops not in cans that are diet or caffeine-free B. All non-cola soda pops not in cans C. All diet, caffeine-free soda pops not in cans D. All non-diet, non-caffeine-free soda pops not in cans
Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. 