Simplify the expression using the imaginary unit i.
A. -6
B. 6i
C. -6i
D. 6
Answer: B
Mathematics
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Find the range of the given function.f(x) = -4x + x2 + 8
A. [4, ?) B. (-?, 0] C. [2, ?) D. [-2, ?)
Mathematics
Evaluate the expression.
A. 10!
B. 
C. 10
D. 1
Mathematics
Polar coordinates of a point are given. Use a graphing utility to find the rectangular coordinates of the point to two decimal places.
A. (0.96, 2.63) B. (-0.96, -2.63) C. (2.63, 0.96) D. (-2.63, -0.96)
Mathematics
Round to the indicated place value.Round to the nearest ten: 92.4
A. 91 B. 89 C. 90
Mathematics