Simplify the expression. Assume that all variables represent non-negative real numbers.15
+ 10
A. 5
B. 25
C. 5
D. 25
Answer: B
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Find the standard deviation. Round to one more place than the data.293, 171, 151, 127, 181, 265, 111, 129, 136
A. 68.3 B. 60.3 C. 63.9 D. 21.7
Use a system of linear equations to solve the problem.The Family Fine Arts Center charges $25 per adult and $14 per senior citizen for its performances. On a recent weekend evening when 497 people paid admission, the total receipts were $8707. How many who paid were senior citizens?
A. 249 senior citizens B. 159 senior citizens C. 248 senior citizens D. 338 senior citizens
Provide an appropriate response.The bar graph shows governmental budget outlays for Country X's Department of the Environment for the years 2008 through 2011. Use a signed number to represent the change in outlay for (a) 2008 to 2009 and (b) 2010-2011.
A. (a) -24.6 billion dollars, (b) -6.7 billion dollars B. (a) 106.4 billion dollars, (b) 52.1 billion dollars C. (a) 24.6 billion dollars, (b) 6.7 billion dollars D. (a) -106.4 billion dollars, (b) -52.1 billion dollars