Determine the period of the function and sketch its graph.y = cos 
A. period: 2?
B. period: 4?
C. period: 4
D. period: 4?
Answer: B
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A house appreciates by 6% each year. If the house is worth $77,000 today, how much will it be worth 15 years from now?Round your answer to the nearest cent.
A. $184,541.99 B. $184,543.99 C. $184,534.98 D. $184,520.98
Find the slope and the y-intercept of the line.y = -4x - 7
A. Slope -7; y-intercept (0, -4) B. Slope -4; y-intercept (-7, 0) C. Slope -4; y-intercept (0, -7) D. Slope -4; y-intercept (0, 7)
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
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-1
A. 
B. 
C. 
D. 