Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: A
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Find the derivative of the function.g(x) = x(x6 + 9)1/3
A. g '(x) = 
B. g '(x) = 
C. g '(x) = 
D. g '(x) = 
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -3x2 - 2x - 2
A. vertex 
intercept (0, 2) 
B. vertex 
intercept (0, -2) 
C. vertex 
intercept (0, 2) 
D. vertex 
intercept (0, -2)
Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: y = 
. How many hours of study are needed to score 82? Round to the nearest hundredth of an hour.
A. 100.82 hr B. 24.40 hr C. 2.44 hr D. 4.23 hr