Simplify the expression. Assume that all variables are positive when they appear.
A. 8y4 
B. 8x3y4 
C. 8x7y8 
D. 8x3y4 
Answer: B
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Add or subtract as indicated. Express the answer in feet and inches.8 ft 9 in. + 13 ft 5 in.
A. 21 ft 2 in. B. 21 ft 5 in. C. 22 ft 4 in. D. 22 ft 2 in.
Change the fraction or mixed number into an equivalent decimal. Use bar notation to write repeating decimals. 
A. 0.7
B. 0.6
C. 0.7
D. 0.7
When changes occur in the activities that help create new knowledge or in the activities that help transform new knowledge into new processes, products or materials - these changes are known as ____.
A. demographic trends B. political trends C. socio-cultural trend D. technological trends
Find the median for the given sample data.In ten trips to Las Vegas, a person had the following net gains: $3046 $2093 $4340 $6427 $2640 $1704 $6705 $7129 $6406 $4499 Find the median net gain.
A. $4419.50 B. $4499.40 C. $4340 D. $4999.83