Use technology to compute r, the correlation coefficient.The following are costs of advertising (in thousands of dollars) and the number of products sold (in thousands): 
A. -.0707
B. .7077
C. .2456
D. .2353
Answer: B
Mathematics
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Provide an appropriate response.If f(x) = 
, find the rate of change of f'.
What will be an ideal response?
Mathematics
Estimate the slope (if it exists) of the line from its graph.
A. 
B. 
C. 
D. 
E. undefined
Mathematics
Write the appropriate symbol, < or >, between the following integers.-26 ___ -(-21)
A. > B. <
Mathematics
Solve the equation.
+ 
= 4
A. {-2}
B. {2, -2}
C. {
, -2}
D. {0}
Mathematics