Simplify the expression. First use the distributive property to remove any parentheses.-8(r + 8)
A. -8r - 64
B. -8r - 8
C. r - 64
D. -8r + 64
Answer: A
Mathematics
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. ? B. 0 C. 1 D. No limit
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Write a description of the shaded region using the symbols A, B, C, ?, ?, -, and ' as needed.
A. B - (A ? C) B. B ? (A ? C)' C. A' ? C' ? B D. (B - A) ? C
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Find the product using the FOIL method.(x2 + 4)(x2 + 5)
A. x4 - 9x2 - 20 B. x4 + 20x2 + 20 C. x4 + 9x2 + 20 D. x4 + 9x2 + 40
Mathematics
Give an expression that generates all angles coterminal with the given angle. Let n represent any integer.-21°
A. -21° - n ? 180° B. -21° + n ? 360° C. -21° + n ? 180° D. -21° + 2n ? 360°
Mathematics