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
Mathematics
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Graph the one-to-one function as a solid curve and its inverse as a dashed curve on the same axes.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
If necessary, write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.3x2 = 14x - 21
A. a = 3, b = 14, c = -21 B. a = 3, b = -14, c = 21 C. a = 3, b = 14, c = 21 D. a = 3, b = -14, c = -21
Mathematics
Perform the indicated operations.(3z2 + 6z + 8) + (z3 + 5z - 4)
A. 4z3 + 11z + 4 B. 4z2 + 11z + 4 C. z3 + 3z2 + 11z - 4 D. z3 + 3z2 + 11z + 4
Mathematics
The equation of a hyperbola is given. Match the equation with its graph.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics