Solve the system of equations by substitution.
A. (7, 0)
B. (0, -7)
C. (1, -8)
D. no solution
Answer: B
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Complete the square to find the x-intercepts of the function.f(x) = 4x2 + 40x + 60
A. (-5 + 
, 2), (-5 - 
, 2)
B. (5 + 
, 0), (5 - 
, 0)
C. (-5 + 
, 0), (-5 - 
, 0)
D. (-5 + 
, 0), (-5 - 
, 0)
Solve the equation or inequality.
= -4
A. ?
B. 
C. {- 
, - 
}
D. {1, 
}
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
List the intercepts of the graph.Tell whether the graph is symmetric with respect to the x-axis, y-axis, origin, or none of these. 
A. intercepts: (-3, 0), (0, 0), (3, 0) symmetric with respect to y-axis B. intercepts: (-3, 0), (0, 0), (3, 0) symmetric with respect to origin C. intercepts: (-3, 0), (0, 0), (3, 0) symmetric with respect to x-axis D. intercepts: (-3, 0), (0, 0), (3, 0) symmetric with respect to x-axis, y-axis, and origin