Solve the problem.How many different license plates can be made using 3 letters followed by 3 digits selected from the digits 0 through 9, if digits may be repeated but letters may not be repeated?
A. 17,576,000
B. 3095.2381
C. 12,654,720
D. 15,600,000
Answer: D
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Solve the inequality. Write the solution set in interval notation.(x + 2)(x - 1) ? 0
A. [-2, 1] B. (-?, -2] ? [1, ?) C. (-2, 1) D. (-?, -2) ? (1, ?)
Write the sum or difference as a product containing only sines and/or cosines.cos(6?) + cos(4?)
A. 2 sin(5?) sin ? B. 2 cos(5?) sin ? C. 2 cos(5?) cos ? D. 2 cos(5?)
Find the vertex, focus, and directrix of the parabola with the given equation.(x + 4)2 = -4(y - 1)
A. vertex: (-4, 1) focus: (-4, 0) directrix: y = 2 B. vertex: (-4, 1) focus: (-4, 2) directrix: x = 0 C. vertex: (1, -4) focus: (1, -5) directrix: y = -3 D. vertex: (4, -1) focus: (4, -2) directrix: y = 0
Simplify the exponential expression.(-5x)2
A. -10x2 B. -10x C. 25x2 D. 25x