Find the exact value of the expression.cos
A. 1
B. 
C. 
D. 
Answer: C
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The box plots represent a comparison of the annual salaries of a group of opera and a group of country western singers respectively.
Reba is a country western singer whose annual salary is twice the median salary of the group of country western singers. Sylvia is the highest paid among the group of opera singers. Which of the following statements is true?
A. Sylvia's annual salary is higher than Reba's. B. Reba and Sylvia have the same annual salary. C. Reba's annual salary is higher than Sylvia's. D. The information provided is not sufficient to determine which of the two salaries is higher. E. none of these
Find the domain and the range of the functions or relations from the graph.
A. domain: (-?, -4] ? [4, ?); range: (-?, ?) B. domain: [-4, 4]; range: (-?, ?) C. domain: (-?, ?); range: (-?, ?) D. domain: (-?, ?); range: (-?, -4] ? [4, ?)
Identify as an equation or an expression.-3x + 8 = 
A. Equation B. Expression
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.(x9y-1)9
A. x81y9
B. 
C. 
D. 