Find the absolute value of the quantity.-20
A. 0
B. 1
C. 20
D. -20
Answer: C
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Solve the problem.Roberto invested some money at 8%, and then invested $3000 more than twice this amount at 11%. His total annual income from the interest was $3930. How much was invested at 11%?
A. $27,000 B. $9000 C. $24,000 D. $2700
Find the vertex of the parabola, and determine whether the parabola opens upward, downward, to the left, or to the right.y = -(x + 6)2 + 4
A. (4, -36), up B. (-6, 4), down C. (-4, 6), down D. (4, -6), up
Find the domain of the function.g(x) = 
A. {x|x ? -9, 9} B. {x|x ? 0} C. all real numbers D. {x|x > 81}
Find the domain and range of the inverse of the given function.f(x) = 6 - x2 ; x ? 0
A. Domain: (-?, 6]; range: all real numbers B. Domain: [6, ?); range: [0, ?) C. Domain: [0, ?); range: (-?, 6] D. Domain: (-?, 6]; range: [0, ?)