Match each description below with the letter of the correct number set.
?
A. natural
B. whole
C. integer
A. {1,..., 6, 7, 8,...}
B. {0,..., 5, 6, 7, ...}
C. {..., -7, -6, -5,..., 0, ..., 5, 6, 7, ...}
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Use a calculator to write the expression as a decimal rounded to three decimal places.
A. 6.782 B. 11.500 C. 2.604 D. 3.583
Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 + 2x + 2 = 0
A. One real solution B. Two different real-number solutions C. Two different imaginary-number solutions
Find the center (h, k) and radius r of the circle with the given equation. x2 + y2 + 4x - 8y + 20 = 64
A. (h, k) = (4, -2); r = 8 B. (h, k) = (-4, 2); r = 64 C. (h, k) = (-2, 4); r = 8 D. (h, k) = (2, -4); r = 64
Graph the function.y = 2 ? 2x
A. 
B. 
C. 
D. 