Solve the problem.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). By using linear regression, the following function is obtained: 
where x is the cost of advertising (in thousands of dollars) and y is number of products sold (in thousands). Use this function to predict the number of products sold if the cost of advertising is $5000.
A. 66.75
B. 76.45
C. 66
D. 14,005.8
Answer: C
Mathematics
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Solve the problem.Find the values of a, b and c that make 
a gradient field.
What will be an ideal response?
Mathematics
The following table shows the length L, in inches, of a certain type of fish when it is ?t years old.
?
258101315
9.314.718.418.921.321.96?
Based on the table, what do you expect is the limiting value of L?
What will be an ideal response?
Mathematics
Use the indicated entry as the pivot and perform the pivoting once.
A. 
B. 
C. 
D. 
Mathematics
Find the radius or diameter as requested.Find the diameter.
A. 56.52 mi B. 36 mi C. 1017.36 mi D. 9 mi
Mathematics