Find the range of the data set.39, 28, 61, 67, 52, 42
A. 39
B. 47.5
C. -10
D. 95
Answer: A
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, -1) for 3xy2 - 2x2y - 2x = 0.
A. 
B. - 
C. - 1
D. 
Determine the values of x for which the function is differentiable.y = x2 - 16
A. All real numbers except 16 B. All real numbers except 4 C. All real numbers D. All real numbers except -4 and 4
Solve the problem.The number of employees of a company, N(t), who have heard a rumor t days after the rumor is started is given by the logistic equation 
How many employees have heard the rumor 12 days after it is started?
A. 75 employees B. 60 employees C. 68 employees D. 7 employees
Factor the binomial completely.64 - x2y2
A. (8 - xy)2 B. prime C. (8 - xy)(8 + xy) D. (8 + xy)2