Use the decibel scale to answer the question.How does the intensity of sound from a concert speaker at a distance of 20 meters compare to the intensity at a distance of 100 meters?
A. Factor of 100 weaker at 100 m.
B. Factor of 50 weaker at 100 m.
C. Factor of 25 weaker at 100 m.
D. Factor of 5 weaker at 100 m.
Answer: C
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431 is equal to which of the following binary numbers?
a. 0110011012 b. 1111010112 c. 1101011112 d. 1101110112 e. 1011011002
Use the figure to answer the question.The following scatterplot shows the heights (in inches) of a group of children and their ages. 
Age (years)From this data, conjecture how old you think a child is who is about 39 inches tall?
A. 3 months B. 7 years C. 1 year D. 3 years
Divide, if possible.
A. 5 B. -5 C. 0 D. Not defined
Determine whether the triangles in the given pair are congruent. If so, state the property that shows the triangles are congruent.
A. congruent; ASA B. not congruent C. congruent; SSS D. congruent; SAS