Write the standard form of the equation of the circle with the given center and radius.(0, 0); 5
A. x2 - y2 = 5
B. x2 + y2 = 5
C. x2 + y2 = 10
D. x2 + y2 = 25
Answer: D
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Identify which of these types of sampling is used: simple random, stratified, systematic, or convenience.A sample consists of every 20th student who leaves the library.
A. Systematic B. Stratified C. Simple random D. Convenience
Determine the amplitude and range of the function and sketch its graph.y = -2 cos 3x
A. amplitude: 2; range: [0, 2]
B. amplitude: 2; range: [-2, 2]
C. amplitude: 2; range: [-2, 2]
D. amplitude: -2; range: [0, 2]
Graph the linear equation. Give the x- and y-intercepts.x + 6 = 0
A. x-intercept: (6, 0); y-intercept: none
B. x-intercept: (-6, 0); y-intercept: none
C. x-intercept: (0, 0); y-intercept: (0, 0)
D. x-intercept: none; y-intercept: (0, -6)
Reduce the rational expression to lowest terms.
A. 
B. 
C. 
D. 