The graph of a function f is given. Use the graph to answer the question.Is f(3) positive or negative?
A. negative
B. positive
Answer: A
Mathematics
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.People who take more vacations score higher on standardized tests.
A. Positive correlation; coincidence B. Positive correlation; direct cause C. Negative correlation; common underlying cause D. Positive correlation; common underlying cause
Mathematics
Find the interval of convergence of the series.
A. -? < x < ? B. x < 3 C. 1 < x < 3 D. 1 ? x < 3
Mathematics
Use a calculator to find the value of the expression rounded to two decimal places.cos-1 
A. 98.21 B. 1.71 C. -0.14 D. -8.21
Mathematics
Simplify.
A. - 
B. 
C. - 
D. 
Mathematics