Evaluate.cos-1 
A. - 
B. 
C. 
D. 
Answer: B
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Perform the addition or subtraction and simplify.
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A. 
B. ?
C. ?
D. ?
E. ?
Provide an appropriate response.Shortly before an election, a market research firm took a poll to find out whether people were planning to vote for or against a particular ballot measure. The results are shown below. 
The ballot measure will pass if a simple majority (more than 50%) vote in favor of the measure. You wish to construct a graph to represent the data. It should be easy to see from your graph whether more than 50% of the people are planning to vote in favor of the measure. Which graph would be more useful, a bar graph or a pie chart? Explain your thinking.
What will be an ideal response?
Solve the problem. Round your answer to 2 decimal places when necessary.In a recent year, there were 45 accidents in commercial aviation among major airlines over 15.0 million flight hours. Find the accident rate in units of accidents per 100,000 flight hours.
A. 3 accidents per 100,000 flight hours B. 0.30 accidents per 100,000 flight hours C. 0.45 accidents per 100,000 flight hours D. 4.5 accidents per 100,000 flight hours
Evaluate the expression without using a calculator, or state that the value does not exist. Simplify the answer to the extent possible.coth(ln 7)
A. 
B. 
C. 
D. 